A certain sum amounts to Rs 4840 in 2 years and to Rs 5324 in 3 years at compound interest. Find the rate and the sum.
Rs 4000 = P
Rs 2000 = P
Rs 3000 = P
Rs 4500 = P
A sum of mpmon deposited at compound interest amounts to Rs.2420 and to Rs.2662 in 3 years . Find the rate of interest .