Question

Bansi has 3 times as many two-rupee coins as he has five-rupee coins. If he has in all a sum of Rs 77, how many coins of each denomination does he have?

Answer 1

5 rupee coins = x

Two rupee coins = 3x

5(x) + 2(3x) = 77

5x + 6x = 77

11x = 77

77/11 = 7

x=7

Five rupee coins = 7

Two rupee coins = 3(7) = 21