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The potato paradox

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  • J Jorgen Andersson

    You have 100 lb of "mathematical" potatoes, which are 99 percent water by weight. You let them dehydrate until they're 98 percent water. How much do they weigh now? No googling, ok.

    Wrong is evil and must be defeated. - Jeff Ello

    L Offline
    L Offline
    Lost User
    wrote on last edited by
    #3

    Quote:

    No googling, ok.

    Ok, but than please ask it for 45.359237 kg ;P :-D

    It does not solve my Problem, but it answers my question

    OriginalGriffO 1 Reply Last reply
    0
    • OriginalGriffO OriginalGriff

      50lbs. 1lb == 1% of 100lb, and 2% == 50lbs So as not to give the game away! (hilight to reveal)

      Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

      J Offline
      J Offline
      Jorgen Andersson
      wrote on last edited by
      #4

      And we have a winner. That was to quick, I was hoping for a few wrong ones to start with. :)

      Wrong is evil and must be defeated. - Jeff Ello

      OriginalGriffO 1 Reply Last reply
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      • J Jorgen Andersson

        And we have a winner. That was to quick, I was hoping for a few wrong ones to start with. :)

        Wrong is evil and must be defeated. - Jeff Ello

        OriginalGriffO Offline
        OriginalGriffO Offline
        OriginalGriff
        wrote on last edited by
        #5

        That's why I hid it - I remembered it from somewhere.

        Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

        "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
        "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

        1 Reply Last reply
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        • OriginalGriffO OriginalGriff

          50lbs. 1lb == 1% of 100lb, and 2% == 50lbs So as not to give the game away! (hilight to reveal)

          Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

          M Offline
          M Offline
          Munchies_Matt
          wrote on last edited by
          #6

          I dont get it. Should be 99.0001 lbs or some such.

          OriginalGriffO 1 Reply Last reply
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          • OriginalGriffO OriginalGriff

            50lbs. 1lb == 1% of 100lb, and 2% == 50lbs So as not to give the game away! (hilight to reveal)

            Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

            L Offline
            L Offline
            Lost User
            wrote on last edited by
            #7

            Forgive me for being thick but I cannot get my head round that. In 100lb there is 1lb of starch and 99 lbs of water (yes?). So if you lose 1% of the water, isn't that just 1lb less than before?

            OriginalGriffO W M N 4 Replies Last reply
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            • L Lost User

              Forgive me for being thick but I cannot get my head round that. In 100lb there is 1lb of starch and 99 lbs of water (yes?). So if you lose 1% of the water, isn't that just 1lb less than before?

              OriginalGriffO Offline
              OriginalGriffO Offline
              OriginalGriff
              wrote on last edited by
              #8

              OK, so 100ib of potatoes, 99% water. That means that 1% is not water, and that weighs 1lb. If you reduce the water content to 98%, that doesn't affect the non-water part, so 1lb of the potatoes is now 2% of the total. If 2% of the weight is 1lb, then the total weight is now 50lb. For 97% you get 33.3lb, 96% gives 25lb, and so on.

              Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

              "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
              "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

              L 1 Reply Last reply
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              • M Munchies_Matt

                I dont get it. Should be 99.0001 lbs or some such.

                OriginalGriffO Offline
                OriginalGriffO Offline
                OriginalGriff
                wrote on last edited by
                #9

                OK, so 100ib of potatoes, 99% water. That means that 1% is not water, and that weighs 1lb. If you reduce the water content to 98%, that doesn't affect the non-water part, so 1lb of the potatoes is now 2% of the total. If 2% of the weight is 1lb, then the total weight is now 50lb. For 97% you get 33.3lb, 96% gives 25lb, and so on.

                Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                M 1 Reply Last reply
                0
                • L Lost User

                  Quote:

                  No googling, ok.

                  Ok, but than please ask it for 45.359237 kg ;P :-D

                  It does not solve my Problem, but it answers my question

                  OriginalGriffO Offline
                  OriginalGriffO Offline
                  OriginalGriff
                  wrote on last edited by
                  #10

                  OK - the new weight is 22.679618kg.

                  Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                  "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                  "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                  1 Reply Last reply
                  0
                  • OriginalGriffO OriginalGriff

                    OK, so 100ib of potatoes, 99% water. That means that 1% is not water, and that weighs 1lb. If you reduce the water content to 98%, that doesn't affect the non-water part, so 1lb of the potatoes is now 2% of the total. If 2% of the weight is 1lb, then the total weight is now 50lb. For 97% you get 33.3lb, 96% gives 25lb, and so on.

                    Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                    L Offline
                    L Offline
                    Lost User
                    wrote on last edited by
                    #11

                    :thumbsup: I knew it would be simple.

                    OriginalGriffO 1 Reply Last reply
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                    • L Lost User

                      :thumbsup: I knew it would be simple.

                      OriginalGriffO Offline
                      OriginalGriffO Offline
                      OriginalGriff
                      wrote on last edited by
                      #12

                      It's simple when you see it! :laugh: If I recall correctly, I scratched my head a fair amount the first time I saw this one.

                      Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                      "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                      "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                      1 Reply Last reply
                      0
                      • J Jorgen Andersson

                        You have 100 lb of "mathematical" potatoes, which are 99 percent water by weight. You let them dehydrate until they're 98 percent water. How much do they weigh now? No googling, ok.

                        Wrong is evil and must be defeated. - Jeff Ello

                        L Offline
                        L Offline
                        Lost User
                        wrote on last edited by
                        #13

                        That's more lettuce than potato. A potato will clock in at roughly 75% water (just a tad more than a human). Still a nice example where math beats intuition :thumbsup:

                        Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^] "If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

                        J 1 Reply Last reply
                        0
                        • OriginalGriffO OriginalGriff

                          OK, so 100ib of potatoes, 99% water. That means that 1% is not water, and that weighs 1lb. If you reduce the water content to 98%, that doesn't affect the non-water part, so 1lb of the potatoes is now 2% of the total. If 2% of the weight is 1lb, then the total weight is now 50lb. For 97% you get 33.3lb, 96% gives 25lb, and so on.

                          Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                          M Offline
                          M Offline
                          Munchies_Matt
                          wrote on last edited by
                          #14

                          "To 98%" of what is the question. The original weight or the final weight. That wasnt specified. :)

                          OriginalGriffO 1 Reply Last reply
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                          • M Munchies_Matt

                            "To 98%" of what is the question. The original weight or the final weight. That wasnt specified. :)

                            OriginalGriffO Offline
                            OriginalGriffO Offline
                            OriginalGriff
                            wrote on last edited by
                            #15

                            Quote:

                            You let them dehydrate until they're 98 percent water.

                            That's pretty clear!

                            Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                            "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                            "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                            M P 2 Replies Last reply
                            0
                            • OriginalGriffO OriginalGriff

                              Quote:

                              You let them dehydrate until they're 98 percent water.

                              That's pretty clear!

                              Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                              M Offline
                              M Offline
                              Munchies_Matt
                              wrote on last edited by
                              #16

                              Nothing is clear in the land of language....

                              B 1 Reply Last reply
                              0
                              • L Lost User

                                That's more lettuce than potato. A potato will clock in at roughly 75% water (just a tad more than a human). Still a nice example where math beats intuition :thumbsup:

                                Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^] "If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

                                J Offline
                                J Offline
                                Jorgen Andersson
                                wrote on last edited by
                                #17

                                These are 'mathematical' potatoes. :) But feel free to substitute with jellyfish if you want to.

                                Wrong is evil and must be defeated. - Jeff Ello

                                L 1 Reply Last reply
                                0
                                • J Jorgen Andersson

                                  These are 'mathematical' potatoes. :) But feel free to substitute with jellyfish if you want to.

                                  Wrong is evil and must be defeated. - Jeff Ello

                                  L Offline
                                  L Offline
                                  Lost User
                                  wrote on last edited by
                                  #18

                                  Could as well have chosen a mathematical ball of lead with 99% water-content. --edit It is misleading, since we have some "experience" with potatoes not shrinking 50% when they lay in the basement.

                                  Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^] "If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

                                  J OriginalGriffO 2 Replies Last reply
                                  0
                                  • L Lost User

                                    Could as well have chosen a mathematical ball of lead with 99% water-content. --edit It is misleading, since we have some "experience" with potatoes not shrinking 50% when they lay in the basement.

                                    Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^] "If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

                                    J Offline
                                    J Offline
                                    Jorgen Andersson
                                    wrote on last edited by
                                    #19

                                    Indeed.

                                    Wrong is evil and must be defeated. - Jeff Ello

                                    1 Reply Last reply
                                    0
                                    • L Lost User

                                      Could as well have chosen a mathematical ball of lead with 99% water-content. --edit It is misleading, since we have some "experience" with potatoes not shrinking 50% when they lay in the basement.

                                      Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^] "If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

                                      OriginalGriffO Offline
                                      OriginalGriffO Offline
                                      OriginalGriff
                                      wrote on last edited by
                                      #20

                                      That's because they start out at 80% water, not 99%. And because nobody regularly checks their spuds for water content... :laugh:

                                      Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                                      "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                                      "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                                      L 1 Reply Last reply
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                                      • OriginalGriffO OriginalGriff

                                        That's because they start out at 80% water, not 99%. And because nobody regularly checks their spuds for water content... :laugh:

                                        Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                                        L Offline
                                        L Offline
                                        Lost User
                                        wrote on last edited by
                                        #21

                                        OriginalGriff wrote:

                                        And because nobody regularly checks their spuds for water content... :laugh:

                                        I keep potatoes in a dark and cool closet. After 3 months, they may have lost "some" weight, but not the same amount as your "mathematical" potatoes. Non-mathematical potatoes do not loose water in a mathematical linear way.

                                        Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^] "If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

                                        OriginalGriffO 1 Reply Last reply
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                                        • L Lost User

                                          OriginalGriff wrote:

                                          And because nobody regularly checks their spuds for water content... :laugh:

                                          I keep potatoes in a dark and cool closet. After 3 months, they may have lost "some" weight, but not the same amount as your "mathematical" potatoes. Non-mathematical potatoes do not loose water in a mathematical linear way.

                                          Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^] "If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

                                          OriginalGriffO Offline
                                          OriginalGriffO Offline
                                          OriginalGriff
                                          wrote on last edited by
                                          #22

                                          Eddy Vluggen wrote:

                                          Non-mathematical potatoes do not loose water in a mathematical linear way.

                                          Or as quickly - unless you use the fridge / freezer as a dehydration device, as you do for Triple-Cooked Chips, where reducing the volume of the chips before the final frying probably does approach 50%

                                          Sent from my Amstrad PC 1640 Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!

                                          "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                                          "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

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