Rahim bought 27 books for Rs.581 from one shop and 20 books for Rs.594 from another. What is the average price he paid per book ? Select the correct option.
A) 28
B) 18
C) 27
D) 25
E) 21
Average price per book   = (581+ 594) / (27 + 20)   = 1175 / 47   = Rs.25   Answer:25
<result>D</result>
Rahim bought 27 books for Rs.581 from one shop and 20 books for Rs.594 from another. What is the average price he paid per book ?