In each of the following questions given below there are two blanks, each blank indicates that something has been omitted. Choose the answer in order. A shopkeeper decides to gives --------- discount on the marked price of an article, but also wants to earn 10 % profit. If the C.P of article is Rs--------- then the marked price will be Rs.110 A. 5 % , 95 B. 9%, 110 C. 12%, 28 D. 5%, 21

If CP = 95 and discount = 5%, then marked price = 95 × 1.10 = 104.5, not 110. But if marked price = 110 and discount = 5%, selling price = 110 × 0.95 = 104.5. Profit = 104.5 - 95 = 9.5, which is not 10% of 95 (which would be 9.5). Actually 9.5/95 = 0.1 = 10%. So this works. The calculation is: SP = MP × (1 - discount) = 110 × 0.95 = 104.5, and profit = 104.5 - 95 = 9.5, which is exactly 10% of 95.