The ratio of compound interests for `3 and 2` years at the same principle and same rate of interest is `273 : 152` . Find the rate of interest..​

The compound interest on a certain sum for 2 years is Rs 882, whereas the simple interest on it is Rs 840. Find the rate of interest.

The difference between the compound interest (compounded annually) and simple interest, for two years on the same sum at the amount rate of interest is Rs 370. Find the rate of interest if the simple interest on the amount at the same rate of interest for 1 year is Rs 3700.

The difference between compound interest and simple interest at the same rate on Rs 5000 for 2 years is Rs 72 .The rate of interest per annum is