What will be the compound interest at the rate of 5% per annum for 3 years on that principal which in 3 years at the rate of 5% per annum gives Rs. 1200 as simple interest,

Given,


S.I = Rs.1200


Rate of simple interest = 5%


time = 3 years


Let principal = Rs. P


so, by formula


=


=


Hence,


Principal = Rs.8000


now,


Rate of compound interest = 5%


Time = 3 years


so,


compound interest =


22