+834 In a store window, there was a box of berries having a total weight of $200$ kg. The berries were $99\%$ water, by weight. After two days in the sun, the water content of the berries was only $80\%$, by weight. What was the total weight of the berries after two days, in kg?
+37159 200 kg * .01 = 2 kg of solids in the initial berry box
after two days, this 2kg represents 20 % of the remaining weight
2 kg = .20 x where x is the weight remaing
x = 10 kg remaining
