A shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is:  Select.
A) 45:56	B) 45:51	C) 47:56	D) 47:51	E) None
Solution: Let the CP be 100.   Hence, SP = 100 + 12% of 100 = 112.   If the marked price be X, then   90% of X = 112   =&gt;	X = (112*100)/90 = Rs. 1120/9   Hence,   Required ratio = 100:1120/9 = 900:1120 = 45:56.   45:56nswer: Option 45:56
<result>A</result>
A shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is: