Question

A shopkeeper earns a profit of 15% after selling a book at 20% discount on the printed price. The ratio of the cost price and the printed price of the book is

• A. 16 : 23
• B. 20 : 23
• C. 23 : 16
• D. 23 : 20

Answer 1

The correct option is A 16 : 23

Let the printed price be Rs.100

Then S.P. = Rs.80

Gain% = 15%
$\therefore C.P.=Rs.(\frac{100}{115}\times 80)=Rs.\frac{1600}{23}$
$\therefore$ C.P. Printed price =$=\frac{1600}{23}:100=1600:2300=16:23$