Test 6- Simple Interest Based Questions

This is a test on “Simple Interest” with 10 questions; make sure you time this test to complete within 15 minutes to know how you could perform in actual examination like conditions. Once done, review the results and try the “unattempted” and “wrong” ones before referring to the solution given- this will help maximize your learning! All the best.

1. Two equal sums of money were lent at simple interest at 11% p.a. for 3.5 years and 4.5 years respectively. If the difference in interests for two periods was Rs 412.50, then each sum is


2. A man invested 1/3 of his capital at 7%; 1/4 at 8% and the remainder at 10%. If his annual income is Rs. 561, the capital is


3. A man invests a certain sum of money at 6% p.a. simple interest and another sum at 7% p.a. simple interest. His income from interest after 2 years was Rs. 354. One fourth of the first sum is equal to one-fifth of the second sum. The total sum invested was


4. Simple interest on a certain amount is 9/16 of the principal. If the numbers representing the rate of interest in percent and time in years be equal, then time, for which the principal is lent out, is


5. How long will it take a sum of money invested at 5% p.a. S.I to increase its value by 40%?


6. The rates of simple interest in two banks A and B are in the ratio 5:4. A person wants to deposit his total savings in two banks in
such a way that he received equal half year interest from both. He should deposit the savings in banks A and B in the ratio


7. A sum of money trebles itself in 15 years 6 months. In how many years would it double itself?


8. A sum of Rs. 725 is lent in the beginning of a year at a certain rate of interest. After 8 months, a sum of Rs. 362.50 more is lent but
at the rate twice the former. At the end of the year, Rs. 33.50 is earned as interest from both the loans. What was the original rate of


9. A sum was put at simple interest at a certain rate for 2 years. Had it been put at 3% higher rate, it would have fetched Rs. 72 more. The sum is


10. A sum of Rs. 1550 was lent partly at 5% and partly at 8% p.a. simple interest. The total interest received after 3 years was Rs. 300. The ratio of the money lent at 5% to that lent at 8% is


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