Sandy bought 65 books for $1180 from one shop and 55 books for $860 from another shop. What is the average price that Sandy paid per book?
Select the correct option
A) $ 13 B) $ 15 C) $ 17 D) $ 19 E) $ 21

Rationale: "average price per book = ( 1180 + 860 ) / ( 65 + 55 ) = 2040 / 120 = $ 17 the answer is c ."
Answer: C