A farmer has 100kg of potatoes. At the start, they are composed of 99% of water (the water is 99% of the total weight) and 1% of dry matter (the dry matter is 1% of the total weight). Later, during storage and because of evaporation, the water percentage drops to 98%. What is the total weight of the potatoes then?
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50kg.
At the start, there are 99kg of water and 1kg of dry matter. Later, the quantity of dry matter didn’t change, but it is now representing 2% of the total mass. If 1kg is 2%, then 100% is 50kg.