Table of Contents
SIMPLE INTEREST AND COMPOUND INTEREST PROBLEMS FOR MRSAFPI
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11. If the rate of simple interest is reduced from 15/2% per annum to 13/2% per annum, find the decrease in half yearly interest on ₹7280.
- ₹32.60
- ₹36.40
- ₹39.50
- ₹31.70
12. When a bank reduced the rate of interest from 13/2% per annum to 11/2% per annum, a depositor withdrew ₹600 and thereby his interest reduced by ₹73. Find the initial deposit.
- ₹4000
- ₹6000
- ₹7000
- ₹9000
13. A man buys a music system valued at ₹8000. He pays ₹3500 at once and the rest 18 months later on which he is charged simple interest at the rate of 8% per annum. Find the total amount he pays for the music system.
- ₹9260
- ₹8540
- ₹8720
- ₹9410
14. Simple interest on ₹1680 for 4 year at 15/2% per annum as equal to the simple interest on ₹1200 at 7% per annum for a certain period of time. The period of time is:
- 7 years
- 6 years
- 16/3 years
- 29/4 years
15. If the simple interest for 5 years be equal to 40% of the principal, it will be equal to the principal after
- 12 year 3 months
- 12 year 6 months
- 12 year 4 months
- 12 year 9 months
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16. A man took a loan at simple interest at 7% in the first year with an increase of 0.5% in each subsequent year. He pays ₹3690 as interest after 5 years. How much loan did he take?
- ₹9250
- ₹9440
- ₹9225
- ₹9360
17. In how many years, a sum will become four times itself at the rate of 12% per annum?
- 28 year
- 25 year
- 22 year
- 27 year
18. A man invests a certain sum of money at 6% per annum simple interest and another at 7% per annum simple interest. His income from interest after 2 years was ₹792. Also, half of the first sum is equal to one-third of the second sum. The total sum invested was
- ₹5800
- ₹6200
- ₹6000
- ₹5900
19. A borrowed ₹4800 from B at 9% per annum simple interest for 3 years. He then added one more money to the borrowed sum and then lent it to C for the same period at 12% per annum simple interest. If A gains ₹720 in the whole transaction, how much money did he add from his side?
- ₹500
- ₹740
- ₹640
- ₹800
20. The simple interest on a sum of money will be ₹600 after 10 years. If the principal is trebeled after 5 year, what will be the total interest at the end of the tenth year.
- ₹600
- ₹900
- ₹1200
- ₹1500
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