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- Question
A sum of money invested at simpleinterest triples itself in 8 years. How many times will it become in 20 years time?
Options- A. 8 times
- B. 7 times
- C. 6 times
- D. 9 times
- Correct Answer
- 6 times
ExplanationA = P(1 + rt/100)
So, A= 3P (it becomes triples)
3P = P(1 + 8r/100)?r = 25%
Now, when t = 20
?A = P(1 + 25*20/100)
?A = P(1+ 5)?A = 6P
So, it becomes 6 times.
- 1. If a person repaid Rs. 22500 after 10 years of borrowing a loan, at 10% per annum simple interest find out what amount did he take as a loan?
Options- A. 11,225
- B. 11,250
- C. 10,000
- D. 7,500 Discuss
- 2. What Principal will yield Rs. 120 as Simple Interest at 6% p.a. in 10 years?
Options- A. ? 120
- B. ? 180
- C. ? 200
- D. ? 210 Discuss
- 3. The difference between Simple Interest and Compound Interest at the rate of 12% on the same amount for 3 years is Rs. 112.32. What is the principal amount if interest is compounded annually?
Options- A. Rs. 25000
- B. Rs. 2500
- C. Rs. 50000
- D. Rs. 5000 Discuss
- 4. The difference between the simple interest obtained by investing Rs. 'X' with 8% per annum for an year and by investing Rs. 'X+1400' with 8% per annum for two years is 240 Rs. Find the value of X.
Options- A. 200
- B. 100
- C. 400
- D. 300 Discuss
- 5. Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs 1200 for 2 years at 10% per annum. The sum placed on simple interest is
Options- A. Rs 525
- B. Rs 1050
- C. Rs 260
- D. Rs 420 Discuss
- 6. Srinivasan invests two equal amounts in two banks giving 8% and 12% rate of interest respectively. At the end of year the interest earned is Rs. 1500. Find the sum invested in each.
Options- A. Rs. 5800
- B. Rs. 15000
- C. Rs. 7500
- D. Rs. 17,000 Discuss
- 7. The simple interest accrued on a sum of money at the end of four years is 1/5th of its principal. What is the rate of interest per annum?
Options- A. 4%
- B. 5%
- C. 6%
- D. Inadequate data Discuss
- 8. The difference between compound interest and simple interest on Rs. 5000 for 2 years at 8% per annum payable yearly is
Options- A. Rs.30
- B. Rs.31
- C. Rs.33
- D. Rs.32 Discuss
- 9. The simple interest on a sum of money for 10 years is Rs 3130. If the principal becomes 5 times after 5 years, then what will be the total interest (in Rs)obtained after 10 years?
Options- A. 6260
- B. 7825
- C. 9390
- D. 15650 Discuss
- 10. The difference between the compound interest compounding half yearly for 1 year and the simple interest for 1 year on a certain sum of money lent out at 8% per annum is Rs 64. What is the sum (in Rs)?
Options- A. 40000
- B. 42000
- C. 44000
- D. 44800 Discuss
Simple Interest problems
Search Results
Correct Answer: 11,250
Explanation:
SI = PTR/100
SI = PX100/100
SI = P
So, Amount=P+SI=2P?22500 = 2P?P = 11250
Correct Answer: ? 200
Correct Answer: Rs. 2500
Correct Answer: 200
Explanation:
[(X+1400)*8*2/100] - [(X*8*1)/100]= 240
0.16X + 14*16 - 0.08X = 240
0.08X = 240 - 224
0.08X = 16
X = Rs. 200
Correct Answer: Rs 525
Correct Answer: Rs. 7500
Explanation:
Let the sum invested be x.
? 8x/100 + 12x/100 = 1500
? 20x = 150000
? x = 7500
Correct Answer: 5%
Correct Answer: Rs.32
Correct Answer: 9390
Correct Answer: 40000
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