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Practice Simple and compound interest Questions and Answers

A certain amount earns simple interest of Rs. 1600 after 4 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...
The simple interest received after 5 years on Rs. (x + 500) at the rate of 20% p.a. is Rs. (2x – 1500). The amount received on Rs. 3x when invested a...
Rs. P invested at R% p.a. gives simple interest and compound interest (compounded annually) of Rs. 640 and Rs. 665.60 respectively at the end of 2 years. F...
Same amounts are invested in two schemes with 8% interest for 2 years, one scheme at S.I. and another scheme at CI. If he received Rs. 41875.2 after 2 year...
A borrows Rs 7000 from B at 10% p.a compound interest compounded annually. At the end of every year he pays Rs 2200 and at the end of 3rd years he pays all...
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs. 2700 after 3 years. If the same amount is invested ...
A man invested a certain amount of sum at 11% per annum simple interest and earned an interest of Rs. 2200 after 2 years. If the same amount is invested at...
A man invested a certain amount of sum at 10% per annum simple interest and earned an interest of Rs. 3000 after 5 years. If the same amount is invested at...
A man invested a certain amount of sum at 20% per annum simple interest and earned an interest of Rs 2700 after 3 years. If the same amount is invested at ...
A woman invests Rs. 2000 at the start of each year at 5% compound interest per annum. How much will her investments be at the end of the 2nd year?
A man invests Rs X in a scheme at 12% rate of interest for 8 years. After 8 years he reinvests the amount received at same rate of interest for same time d...
A person invested Rs. x at 20% CI p.a. in scheme A for 2 years. The interest received was reinvested in B for 2 years at 15% SI p.a. The amount received fr...
Find the period when simple interest on Rs.4000 at 6% per annum will be Rs.400.
A bank pays simple interest at 4% per annum on the first Rs.5500 and an interest of 6% for amounts above that. Find the interest earned by Sameera if she d...
Difference between CI and SI on a sum for 3 year at 20% p.a. is 176. Find the simple interest on the sum after 2 years at 10% p.a.
A certain sum is lent at 4%.p.a. for 3 years, 8% p.a. for the next 4 years, and 12% pa, beyond 7 years. If for a period of 11 years the simple interest obt...
Simple interest on a certain sum at the rate of (50/3)% per annum for three years is Rs. 1250. Find the sum.
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:

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