| A shopkeeper earns a profit of 20% on selling a book at a 16% discount on the printed price. The ratio of the cost price and the printed price is |
A) 5 : 6
B) 5 : 7
C) 7 : 10
D) 6 : 11
Correct Answer: C
Solution :
| Let the printed price be Rs. 100, |
| Then, SP = 84 and gain = 20% |
| \[\text{CP}=\frac{100}{120}\times 84=\text{Rs}\text{. 70}\] |
| CP: Printed Price = 70 :100 = 7 : 10 |
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