Q1. Equal sum of money are lent to A and B at 2.7% per annum simple interest for 2 and 4 years respectively. If the difference in interest paid by them is ₹ 135, find the sum that was lent to each.
Ans - 2500
Q2. A sum of money becomes 5/4 of it in 2 years at a certain rate of simple interest. Find the rate per annum.
Ans - 12.5%
Q3. Aman lent ₹ 2000 each to Amit and Rakesh. After 2 years the difference of simple interests received from both sources is found to be ₹ 32.8. The difference between their rates of interest will be:
Ans - 0.82%
Q4. A sum in invested at 20% compound interest, compounded annually. In two years it would have fetched ₹ 60.25 more if the interest was compounded half yearly. Find the sum.
Ans - 2500
Q5. Difference between the compound interest (compounded annually) and simple interest on a sum of ₹ 4900 at a certain rate for 2 years is ₹ 100. Find the rate.
Ans -14 7/2 %
Q6. If the compound interest on a certain sum is ₹ 520 for 2 years at 16231623% per annum, what will be the simple interest on that sum in 3 years at the same rate of interest?
Ans - 720
Q7. Find compound interest on a sum of ₹ 8000 for 9 months at 20% per annum, if the interest is being compounded quarterly.
Ans -1261
Q8. Paul invests money in three different schemes for 2 years, 4 years and 6 years at 8%, 10% and 12% simple interest respectively. After completion of each scheme he gets same interest. Find the ratio of his investments
Ans - 45:18:10
Q9. What sum of money, considering simple interest, will amount to ₹ 896 in 3 years, and ₹ 960 in 5 years?
Ans - 800
Q10. The simple interest on a sum of money for 2 years at 8% is ₹ 800. The compound interest for the same sum at the same rate for 3 years will be approximately:
Ans - 1298
Q11. Rohit borrows ₹ 400 at the rate of 5% per annum simple interest and Abhishek borrows ₹ X at the rate of 4% per annum simple interest. After 15 years their amount of debt. becomes equal. Find X.
Ans - 437.50
Q12. A sum is invested on simple interest at a certain rate for 3 years. If it had been invested at 4% higher rate, it would have fetched ₹ 36 more. Find the sum.
Ans - 300
Q13. A scheme offers compound interest at the rate of 5% pa, compounded half-yearly. If a man invests ₹ 14000 each on 1st January and 1st July, what will be the total interest earned by him at the end of the year?
Ans - 1058.75
Q14. A sum of ₹ 12800 gives an interest of ₹ 3400 in ‘t’ years at the rate of interest 121/2% compounded annually. Find
Ans - 2 Years
Q15. If simple interest for 5 years is equal to 30% of the principal, it will equal to the principal after:-
Ans - 16 years 8 months
