Rahim bought 40 books for Rs.600 from one shop and 20 books for Rs.240 from another. What is the average price he paid per book ? Pick:
A) s.14  B) s.18  C) s.12  D) s.11  E) s.10
s.14verage price per book   = (600 + 240) / (40 + 20) = 840/ 60   = Rs.14   s.14nswer:s.14
<result>A</result>
Rahim bought 40 books for Rs.600 from one shop and 20 books for Rs.240 from another. What is the average price he paid per book ?