Question

Ramesh borrowed from Suresh certain sum for 2 years at simple interest. He lent this sum to Dinesh at the same rate for 2 years compound interest.
At the end of 2 years Ramesh received Rs. 110 as compound interest from Dinesh but
paid Rs. 100 as simple interest to Suresh. Find the sum and the rate of interest.​

Answer 1

let us assume that the number of coins of 1 rupee are x

therefore coins of 50 paisa are 3x

amount of 1 rupee coin = 1×x=100x paisa

amount of 50 paisa coins=50×3x=150 paisa

100x+150x=4500

250x=4500

x=18

hope it helps you......./.................................