In a store window, there was a box of berries having a total weight of $200$ kg. The berries were $95\%$ water, by weight. After two days in the sun, the water content of the berries was only $90\%$, by weight. What was the total weight of the berries after two days, in kg?
Suprising answer below !
200 kg * 95% = 190 kg of water and 10 kg of fruit solids
then, after two days there is STILL 10 kg of fruit solids which now represent 10% of the total weight
the total weight will then be only 100 kg !!