Practice Simple and compound interest Questions and Answers

• A took loan from a bank at the rate of 17%p.a. simple interest. After 5 years he had to pay Rs.6800 interest only for the period. The principal amount borr...
• David takes a loan of Rs. 20000 from his friend Alex, which he is to return at 10% p.a. simple interest after 5 years. Alex takes a loan from George, which...
• Ravi lends Rs. 10,000 to two of his friends. He gives Rs.5,000 to the first at 15% p.a. simple interest. Ravi wants to make a profit of 20% on the whole. T...
• A sum of money lent out at simple interest amounts to Rs.620 after 2 years and to Rs.1220 after a further period of 4 years. The sum is:
• If the difference of C.I and S.I on some amount is Rs.17 and the sum of the C.I and S.I is 75. Find the product of the C.I and S.I?
• The difference of S.I and C.I on an amount of Rs. 40000 for 2 years is Rs. 64. What is the rate of interest?
• The difference of S.I and C.I on an amount of Rs. 20000 for 2 years is Rs. 162. What is the rate of interest?
• At what % of simple interest per annum will Rs. 400 amount to Rs. 620 in five years?
• At what % of simple interest per annum will Rs. 500 amount to Rs. 610 in five years?
• At what % of simple interest per annum will Rs. 400 amount to Rs. 520 in five years?
• At what % of simple interest per annum will Rs. 400 amount to Rs. 580 in five years?
• At what % of simple interest per annum will Rs. 600 amount to Rs. 720 in five years?
• At what % of simple interest per annum will Rs. 320 amount to Rs. 480 in five years?
• At what % of simple interest per annum will Rs. 600 amount to Rs. 780 in five years?
• A certain sum of money will be doubled in 25 years at the rate of simple interest percent per annum is:
• A certain sum of money will be doubled in 4 years at the rate of simple interest percent per annum is:
• A certain sum of money will be doubled in 2 years at the rate of simple interest percent per annum is:
• A certain sum of money will be doubled in 80 years at the rate of simple interest percent per annum is:
• What sum of money must be given at simple interest for 3 months at 5% per annum in order to earn Rs. 220 interest?
• What sum of money must be given at simple interest for 8 months at 4% per annum in order to earn Rs. 320 interest?
• What sum of money must be given at simple interest for 9 months at 5% per annum in order to earn Rs. 360 interest?
• What sum of money must be given at simple interest for 8 months at 3% per annum in order to earn Rs. 260 interest?
• What sum of money must be given at simple interest for 3 months at 4% per annum in order to earn Rs. 240 interest?
• What sum of money must be given at simple interest for 5 months at 3% per annum in order to earn Rs. 260 interest?
• The difference between compound and simple interest on a sum of money for 2 years at 25% per annum is Rs. 880. The sum is:
• The difference between compound and simple interest on a sum of money for 2 years at 4% per annum is Rs. 626. The sum is:
• The difference between compound and simple interest on a sum of money for 2 years at 5% per annum is Rs. 664. The sum is:
• The difference between compound and simple interest on a sum of money for 2 years at 4% per annum is Rs. 728. The sum is:
• What will be the amount if a sum of Rs. 5000 is placed at compound interest for 3 years while the rate of interest for the first, second and third years is...
• What will be the amount if a sum of Rs. 5500 is placed at compound interest for 3 years while the rate of interest for the first, second and third years is...
• A took loan from a bank at the rate of 12%p.a. simple interest. After 5 years he had to pay Rs.7200 interest only for the period. The principal amount borr...
• A took loan from a bank at the rate of 15%p.a. simple interest. After 3 years he had to pay Rs.13500 interest only for the period. The principal amount bor...
• A certain sum of money becomes 5 times of itself in 20 years at simple interest. In how many years does it become double of itself at the same rate of simp...
• A certain sum of money becomes 5 times of itself in 25 years at simple interest. In how many years does it become double of itself at the same rate of simp...
• A certain sum of money becomes 3 times of itself in 10 years at simple interest. In how many years does it become double of itself at the same rate of simp...
• A certain amount earns simple interest of Rs. 1360 after 4 years. Had the interest been 5% more, how much more interest would it have earned?
• A certain amount earns simple interest of Rs. 1840 after 5 years. Had the interest been 4% more, how much more interest would it have earned?
• A certain amount earns simple interest of Rs. 1480 after 3 years. Had the interest been 5% more, how much more interest would it have earned?
• A certain amount earns simple interest of Rs. 1520 after 5 years. Had the interest been 6% more, how much more interest would it have earned?
• Rs. P invested at R% p.a. gives simple interest and compound interest (compounded annually) of Rs. 750 and Rs. 900 respectively at the end of 2 years. Find...