Question

find the compound interest at the rate of 10% per annum for 3 years on the principal, which in 3 years at the rate of 4% per annum , gives rupees 1200 as a simple interest

Answer 1

The compound interest would be equal to ₹ 3310 .

Answer 2

Answer:

Let the principal be x

SI = P*R*T/100

P=1200*100/4*3

P=10,000

Now,

Amount=P(1+rate/100)^n or time

Amount=10000*(1+10/100)^3

Amount=13310

CI= Amount - Principal

CI=13310 - 10000

CI= 3310 (answer)