Fresh grapes contain 80% water by weight, whereas dried grapes contain
15% water by weight. How many pounds of dried grapes can be obtained
from 34 pounds of fresh grapes? Choose the correct choice from the following options.
A) 8  B) 9  C) 10  D) 11  E) 12
Suppose we call what’s left from a grape after removing all water “waterless   content”. Then 34 pounds of fresh grapes contain 6.8 pounds “waterless content”. Also,   x pounds dried grapes contain x−0.15x = 0.85x pounds “waterless” content”. Solving   the equation 0.85x = 6.8 we get x = 8.   correct answer 8
<result>A</result>
Fresh grapes contain 80% water by weight, whereas dried grapes contain
15% water by weight. How many pounds of dried grapes can be obtained
from 34 pounds of fresh grapes?