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

A sum of Rs4000 is lent for 5 years at the rate of 15% per annum.Find the interest.

A sum of Rs4000 is lent for 5 years at the rate of 15% per annum.Find the interest.

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

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

If Rs. 300 is the interest paid on a certain sum at the rate of 5% per annum simple interest for a period of 5 years, then find the sum. (in Rs. )

Raju borrowed Rs 15,000 from Mahesh at the rate of 15% per annum under simple interest for 3 years. Raju lent some part of money at 20% per annum at simple interest for 3 years and the remaining part at 12% per annum at simple interest for 3 years. If the interest received payable, then find the sum he lent at 20% simple interest?

A sum amounts to Rs. 5600 in 4 years and Rs. 6400 in 6 years at a certain rate of simple interest. Find the rate of interest per annum and the sum.