Question

Raman borrowed a certain sum for 2 years at simple intrerest from mohan . raman lent t his sum to ratan at same rate for 2 years compouded annually . At the end of 2 years raman recieve Rs. 205 as compound interest but paid Rs 200 as simple interest . 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