A sum of Rs. 400 is lent at the rate of 5% per annum. Find the interest at the end of 2 years.

A sum of Rs. 400 is lent for 3 years at the rate of 6% per annum. Find the interest.

A sum of Rs 4000 is lent for 5 years at the rate of 15% per annum. Find the interest.

A sum of Rs 800 is lent for one year at the rate of 18% per annum. Find the interest.

A sum of Rs 1000 is invested at 8% simple interest per annum. Calculate the interest at the end of 1,\ 2,\ 3,\ ddot years. Is the sequence of interests an A.P.? Find the interest at the end of 30 years.

Find the interest on Rs. 500 for a period of 4 years at the rate of 8% per annum. Also, find the amount to be paid at the end of the period.

The interest on a sum of Rs 2000 is being compounded annually at the rate of 4% per annum. Find the period for which the compound interest is Rs 163.20.

Find the compound interest on Rs 160000 for one year at the rate of 20% per annum, if the interest is compound quarterly.

Rachana borrowed a certain sum at the rate of 15% per annum. If she paid at the end of two years Rs 1290 as interest compounded annually, find the sum she borrowed.

A person invests Rs. 5,000 for two years at a certain rate of interest compound annually. At the end of one year, this sum amounts to Rs. 5,600. Calculate. (i) the rate of interest per annum. (ii) the amount at the end of the second year.

Abhay lent Rs 8000 to his friend for 3 years at the rate of 5% per annum compound interest. What amount does Abhay get after 3 years?