Practice Simple and compound interest Questions and Answers

• 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...
• Rs.6000 is divided into two parts such that if one part be invested at 5% and the other at 8%, the annual interest from both the investments is Rs. 435. Fi...
• Rs.7800 is divided into two parts such that if one part be invested at 3% and the other at 5%, the annual interest from both the investments is Rs. 320. Fi...
• Rs.5400 is divided into two parts such that if one part be invested at 6% and the other at 9%, the annual interest from both the investments is Rs. 435. Fi...
• Rs.6600 is divided into two parts such that if one part be invested at 4% and the other at 6%, the annual interest from both the investments is Rs. 372. Fi...
• A sum of money doubles itself in 5 years in how many years it will be 3 times?
• A sum of money doubles itself in 8 years in how many years it will be 5 times?
• What will be the ratio of simple interest earned on certain amount at the same rate of interest for 3 years and that for 9 years?
• What will be the ratio of simple interest earned on certain amount at the same rate of interest for 8 years and that for 10 years?
• What will be the ratio of simple interest earned on certain amount at the same rate of interest for 5 years and that for 10 years?
• What will be the ratio of simple interest earned on certain amount at the same rate of interest for 6 years and that for 16 years?
• The difference between compound interest and simple interest at the same rate for Rs. 3600 for 2 years is Rs. 36. The rate of interest per annum is:
• The difference between compound interest and simple interest at the same rate for Rs. 1800 for 2 years is Rs. 18. The rate of interest per annum is:
• The difference between compound interest and simple interest at the same rate for Rs. 3200 for 2 years is Rs. 128. The rate of interest per annum is:
• The difference between compound interest and simple interest at the same rate for Rs. 2400 for 2 years is Rs. 216. The rate of interest per annum is:
• The difference between compound interest and simple interest at the same rate for Rs. 1200 for 2 years is Rs. 48. The rate of interest per annum is:
• The simple interest on a sum of money is 8/25 of the sum. If the number of years is numerically half the rate per annum, then find the rate percent per ann...
• The simple interest on a sum of money is 9/20 of the sum. If the number of years is numerically half the rate per annum, then find the rate percent per ann...
• The simple interest on a sum of money is 4/25 of the sum. If the number of years is numerically half the rate per annum, then find the rate percent per ann...
• There is 40% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 16,000 after 3 years at the same rate?
• 1000 rupees is invested in a scheme p.a. simple interest. Another amount (1000 – x) is invested in scheme B at 2R% p.a. simple interest. After 5 year...