Hi vishugogo,

Each of the explanations in this string provides a valid approach for this PS question. I tend to side with Mitch's approach - TESTing values is perfect for this type of situation.

The answer themselves actually provide a "logic" shortcut that you can use to avoid most of the "math" involved.

Since apples cost 63 cents/pound, a 20% profit on ALL the apples would be:

63(1.2) = 75.6 cents/pound

This immediately eliminates A, B and C.

Since 10% of the apples "go bad", we can't sell them, so we need to "make up" for the lost 63 cents per "bad apple" AND the "missing profit" from not selling each bad apple. That would drive up the price considerably on the remaining apples that we CAN sell.

Between D and E, D is too close to 75.6 to be the answer. The only answer that makes sense would be E.

GMAT assassins aren't born, they're made,
Rich