Simple interest on Rs 7200 for 3 years is Rs 1080. Find the rate of interest

The amount of simple interest on a deposit of Rs 8, 500 for 3 years is Rs 2,040. Find the rate of interest per annum.

The difference betweent the CI and SI on a sum of Rs 7200 for two years is Rs 72. Find the rate of interest per annum.

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

If the difference of the compound interest and the simple interest on a sum of money for 3 years is Rs. 78. Find the sum of money, if the rate of interest in both case be 10%

If an amount of Rs 5,000 earned a simple interest of Rs 500 over 2years, what is the rate of simple interest?

By compound interest, the interest of a sum in the 2nd year is Rs. 880 and the interest in the 3rd year is Rs. 968. Find the rate of interest and the sum.

Simple interest on a sum of Rs 3300 for 5 years is Rs 1980. What is the annual rate (in percentage) of interest?