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  4. excel formula anyone

excel formula anyone

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  • F fuximus

    This is what I got from my director/president of IT department of our company, I'm not sure if he wrote it or not. It's a formula in an excel cell:

    =(1-(K11-L11)/K11)*100

    i mean seriously, wtf? I've also seen a code/formula than spans a whole line includes several variables which equals to 1 no matter the variables, i pointed it out to the "developer" he laughed his ass off and got embarrassed that was kind of funny.

    0 Offline
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    0bx
    wrote on last edited by
    #2

    What is it supposed to do? My guess is it solves "L11 = x% of K11" for x. I fail to see what's wrong with it to be honest. :confused:

    Giraffes are not real.

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    • 0 0bx

      What is it supposed to do? My guess is it solves "L11 = x% of K11" for x. I fail to see what's wrong with it to be honest. :confused:

      Giraffes are not real.

      F Offline
      F Offline
      fuximus
      wrote on last edited by
      #3

      well yea, basically. It works, it just should have been.

      =L11/K11*100

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      • F fuximus

        well yea, basically. It works, it just should have been.

        =L11/K11*100

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        kwkonrad
        wrote on last edited by
        #4

        Maybe not; if K11 is the price you get, and L11 is the cost, then it will give you the revenue in percent

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        • 0 0bx

          What is it supposed to do? My guess is it solves "L11 = x% of K11" for x. I fail to see what's wrong with it to be honest. :confused:

          Giraffes are not real.

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          phil o
          wrote on last edited by
          #5

          A little maths : (1 - (K11 - L11)/K11) * 100 = (1 - (K11 / K11) + (L11 / K11)) * 100 = (1 - 1 + (L11 / K11)) * 100 = (L11 / K11) * 100 :)

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          • P phil o

            A little maths : (1 - (K11 - L11)/K11) * 100 = (1 - (K11 / K11) + (L11 / K11)) * 100 = (1 - 1 + (L11 / K11)) * 100 = (L11 / K11) * 100 :)

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            0bx
            wrote on last edited by
            #6

            Yeah... I think I'm going to bed early tonight. :zzz:

            Giraffes are not real.

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            • P phil o

              A little maths : (1 - (K11 - L11)/K11) * 100 = (1 - (K11 / K11) + (L11 / K11)) * 100 = (1 - 1 + (L11 / K11)) * 100 = (L11 / K11) * 100 :)

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              Klaus Werner Konrad
              wrote on last edited by
              #7

              No - it's (K11 - L11) !!! And also you should check operator precedence ! You should take another base course in math :-)

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              • K Klaus Werner Konrad

                No - it's (K11 - L11) !!! And also you should check operator precedence ! You should take another base course in math :-)

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                phil o
                wrote on last edited by
                #8

                Just prove what you say and I'll look for a maths course...

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                • P phil o

                  Just prove what you say and I'll look for a maths course...

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                  myramla
                  wrote on last edited by
                  #9

                  >(1 - (K11 - L11)/K11) * 100 > = (1 - (K11 / K11) + (L11 / K11)) * 100 Where did the + came from ? (K11 - L11)/K11 is the same as (K11 / K11 ) - (L11 / K11) Besides, the parentheses signifies that it should be evaluated first. the formula is evaluated to; K11 - L11 then divided by K11, subtract the answer from 1 then multiplied by 100 to represent as a percentage. This is a valid income formula. if L11 = 100, K11 = 200, this will result into a 50% answer.

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                  • M myramla

                    >(1 - (K11 - L11)/K11) * 100 > = (1 - (K11 / K11) + (L11 / K11)) * 100 Where did the + came from ? (K11 - L11)/K11 is the same as (K11 / K11 ) - (L11 / K11) Besides, the parentheses signifies that it should be evaluated first. the formula is evaluated to; K11 - L11 then divided by K11, subtract the answer from 1 then multiplied by 100 to represent as a percentage. This is a valid income formula. if L11 = 100, K11 = 200, this will result into a 50% answer.

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                    B Offline
                    BobJanova
                    wrote on last edited by
                    #10

                    Two minuses make a plus. So yes, as you got, (k-l)/k is k/k-l/k. But the expression is 1-(k-l)/k = 1-(k/k-l/k) = 1-k/k+l/k. The post you were replying to brings the fraction inside and resolves the brackets in one step. (As described earlier, it then further simplifies 1-1+l/k = l/k.)

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                    • M myramla

                      >(1 - (K11 - L11)/K11) * 100 > = (1 - (K11 / K11) + (L11 / K11)) * 100 Where did the + came from ? (K11 - L11)/K11 is the same as (K11 / K11 ) - (L11 / K11) Besides, the parentheses signifies that it should be evaluated first. the formula is evaluated to; K11 - L11 then divided by K11, subtract the answer from 1 then multiplied by 100 to represent as a percentage. This is a valid income formula. if L11 = 100, K11 = 200, this will result into a 50% answer.

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                      phil o
                      wrote on last edited by
                      #11

                      (1 - (K11 - L11)/K11) * 100 = (1 - ((K11/K11) - (L11/K11))) * 100 = (1 - (1 - (L11 / K11))) * 100 = (1 - 1 + (L11 / K11)) * 100 = (L11 / K11) * 100 Did you got it ?

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                      • F fuximus

                        This is what I got from my director/president of IT department of our company, I'm not sure if he wrote it or not. It's a formula in an excel cell:

                        =(1-(K11-L11)/K11)*100

                        i mean seriously, wtf? I've also seen a code/formula than spans a whole line includes several variables which equals to 1 no matter the variables, i pointed it out to the "developer" he laughed his ass off and got embarrassed that was kind of funny.

                        S Offline
                        S Offline
                        StevenFoust
                        wrote on last edited by
                        #12

                        Whoever set up the spreadsheet originally simply plugged in standard accounting formulas without performing any simplification. Gross Profit Margin is defined as the difference between revenue and cost of goods sold, divided by the revenue:

                            GPM = (Revenue - CoGS)/Revenue
                        

                        The equation in the spreadsheet you were looking at was looking at (effectively):

                            (1 - GPM)\*100
                        

                        True, it could have been simplified, but there are (at times) reasons for not performing every possible simplification. In this case, to someone who "thinks" in terms of CoGS, Revenue, Margins, etc. the equation given makes a lot of sense. To a programmer (or a mathmatician) it is not very efficient, but to the accountant it provides self-documenting code. This is especially important in Excel, where you can't add comments to the code (cell equation). It appears that they were trying to calculate the proportion of each dollar of revenue that the company spent as expenses.

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