Rahim bought 52 books for Rs.1200 from one shop and 32 books for Rs.480 from another. What is the average price he paid per book ?
Choose the correct choice:
A) s.17	B) s.18	C) s.12	D) s.20	E) s.10
Average price per book   = (1200+ 480) / (52 + 32) = 1680/ 84   = Rs.20   Answer:s.20
<result>D</result>
Rahim bought 52 books for Rs.1200 from one shop and 32 books for Rs.480 from another. What is the average price he paid per book ?