Question

Find CI on a sum of Rs. 8000 for 2 years at 5% per annum compounded annually.

Answer 1

We have P = Rs 8000, R = 5% p.a., T = 2 years

A = P[1 + R/100]^n

A = 8000[1 + 5/100]^2
= 8000[21/20]^2
= Rs 8820

Now, compound interest = A - P

= Rs 8820 - Rs 8000

= Rs 820