Interest earned on `₹20,000` is `₹1600` more than the interest earned on `₹16,000`. If both the sums were invested at the same rate of interest for `4` years. Find the rate of interest.

Interest earned on ₹9000 is ₹400 more than the interest earned on ₹7000 . If both the sums are invested at the same rate of interest for 4 years, find the rate of interest.

Interset earned on ₹12,000 is ₹980 more than the interest earned on ₹8500 . If both the sums were invested at same rate of interest for 4 years, find the rate of interest.

interest earned on ₹8000 is ₹405 more than the interest earned on ₹6500 . If both the sums are invested at the same rate of interest for 3 years, find the rate of interest.

₹5000 yields ₹100 more aas interest than ₹4000 , if both the sums are invested at the same rate of interest per anuum for 2 years. Find the rate of interest.

An amount of money invested trebled in 6 years . Find the rate of interest earned .

The interest on a certain sum of money is 0*24 times of itself in 3 years. Find the rate of interest.

A sum of Rs. 16000 earns a simple interest of Rs. 2560 in 2 years. Find the rate of interest per annum.

A sum of 16,000, invested at simple interest, amounts to 22,400 in 4 years at a certain rate of interest. If the same sum of money is invested for 2 years at the same rate of interest, compounded p.a., find the compound interest earned.

If the interest on Rs. 2,400 be more than the interest on Rs. 2,000 by Rs. 60 in 3 years at the same rate per cent, find the rate.

रु 8,000 is lent at 5 percent compound interest per year for 2 years. Find the amount and the compound interest.