Question

find the compound interest on 20000 at 15 % per annum for 3 years

Answer 1

amount = 20000
rate = 15%
time = 3 years
amount = 30417. 5
CI= 10417. 5

Answer 2

first you have to write formula : CI = Amount - principal
calculate amount =20000(1+15/100)^3 =30417.5
CI = 30417.5 - 20000 = 10417.5 (it is answer)