At what price must an Book costing $47.50 be marked in order that after deducting 10% from the list price. It may be sold at a profit of 25% on the cost price?	Pick one.
A) 72.5
B) 55.5
C) 62.5
D) 82.5
E) 65.9

Rationale: "e $ 62.50 cp = 47.50 sp = 47.50 * ( 125 / 100 ) = 59.375 mp * ( 90 / 100 ) = 59.375 mp = 65.9 e"
Answer: E