Grapes are 80% water (by weight) and raisins are 20% water (by weight). If we start with 500 grams of grapes and remove enough water to turn them into raisins, then what is the weight of the raisins?
+36916 from 80 to 20 is a reduction of 3/4 ......or only 1/4 of the original remains
500 x 1/4 = 125 gm of raisins
