Simple Interest Questions & Answers

Q11 A sum becomes five times of itself in 20 years. It will become 7 times itself in how many years?

Q12 Some amount out of Rs. 7,000 was lent at 6% per annum and the remaining at 4% per annum. If the total simple interest from both the fractions in 5 years was Rs. 1600, the sum lent at 6% per annum was:

Q13 Raju has invested Rs. 5000 for 2 years at the rate of 8%. How much more money he should invest at the rate of 15% to get the overall interest of 10%? (Assume Simple interest)

Q14 A sum of Rs. 1550 was lent partially at 5% and partially at 8% per annum simple interest. The total interest received after 4 years was Rs. 400. The ratio of the money lent at 5% to that lent at 8% is:

Q15 What annual payment will discharge a debt of Rs.6450 due in 4 years at 5% simple interest?

Q16 A sum of Rs.6450 is borrowed at 5% simple interest and is paid back in 4 equal annual installments. What is amount of each installment?