一道PREP 数学题求解

kirbm

A furnituredealer purchased a desk for $150 and then set the selling price equal to the purchase price plus a markup that was 40percent of the selling price.  If the dealer sold the desk at the selling price, what was the amount of the dealer's gross profit
from the purchase and the sale of the desk?



(A)  $40

(B) $60

(C)  $80

(D)  $90

(E) $100

答案是E
请问为何是100呢??



我的解答150*40%=60

谢谢

Iris780

150/60%=250
250-150=100
你没理解题意。M是S的40%，所以P是S的60%

kirbm

哦，原来如此。

谢谢LS的解答。