The total value of a collection of coins of denominations Rs. 20, Rs. 10, Rs. 5, Rs. 2 and Rs. 1 is 570. If the number of coins of each denomination is the same, then what is the number of Rs. 1 coins?

A10

B12

C15 ✓ Correct

D18

Correct answer: (C) 15

Explanation

There are 15 coins of the Re. 1 denomination.

One coin of each denomination totals 20 + 10 + 5 + 2 + 1 = 38.

With equal numbers n of each, the value is 38 x n.

38 x n = 570, so n = 570 / 38 = 15.

Each denomination has 15 coins, so Re. 1 coins = 15.

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