I also take my laptop with me wherever I go.

The INFINITE is where I am headed

100 lb of potatoes have 99% water and so 1% other stuff i.e. 1 lb. After dehydrating, water is lost but other stuff is still in same quantity i.e. 1 lb. Since water is now 98%, the remaining 2% of the total weight is 1 lb. Hence, 1 lb is 2 % of the total weight. So, the total weight is 50 lb.