Simple interest when sum is divided partly on different rates

The difference between compound and simple interests on a certain sum of money at the interest rate of 10% per annum for 1(1)/(2) years is Rs 183, when the interest is compounded semi-annually.Find the sum of money.

A person lent out certain sum on simple interest and the same sum on compound interest at a certain rate of interest per annum. He noticed that the ratio between the difference of compound interest and simple interest of 3 years and 2 years is 16:49. The rate of interest per annum is

If a sum of money at a certain rate of simple interest per year doubles in 5 years and at a different rate of simple interest per year becomes three times in 12 years, then the difference in the two rates of simple interest per year is

The difference between compound interest (compounded annually) and simple interest on a sum of Rs. 1000 at a certain rate of interest for 2 years is Rs. 10. The rate of interest per annum is:

The simple interest on a sum for 5 years is one fourth of the sum. The rate of interest per annum is

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.