If grapes are 92% water and raisins are 20% water, then how much did a quantity of raisins, which currently weighs 10 pounds, weigh when all the raisins were grapes? (assume that the only difference between their raisin-weight and their grape-weight is water that evaporated during their transformation.)
a. 25 pounds
b. 46 pounds
c. 92 pounds
d. 100 pounds
e. 146 pounds