Rahim bought 65 books for Rs.1150 from one shop and 50 books for Rs.920 from another. What is the average price he paid per book ?  Choose the correct choice from the following answers
A) Rs.17
B) Rs.18
C) Rs.12
D) Rs.11
E) Rs.10
Average price per book   = (1150 + 920) / (65 + 50) = 2070 / 115   = Rs.18   Answer:Rs.18
<result>B</result>
Rahim bought 65 books for Rs.1150 from one shop and 50 books for Rs.920 from another. What is the average price he paid per book ?