A Shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed. The ratio of the cost price and the printed price of the book is:
Choose the most appropriate option
A) 12:24
B) 29:23
C) 32:41
D) 45:56
E) 40:42
Explanation:   Printed price of the book is Rs. 100   After a discount of 10% S.P = Rs. 90   Profit earned = 12%   C.P of the book = Rs. (100/112 × 90) = Rs. 1125/14   (C.P) : (Printed price) = 1125/14 : 100 or 45 : 56   Answer: Option 45:56
<result>D</result>
A Shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed. The ratio of the cost price and the printed price of the book is: