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- Question
A sum of money amounts to Rs.6690 after 3 years and to Rs.10,035 after 6 years on compound interest.find the sum.
Options- A. 4360
- B. 4460
- C. 4560
- D. 4660
- Correct Answer
- 4460
ExplanationLet the sum be Rs.P.then
P(1+R/100)^3=6690?(i) and P(1+R/100)^6=10035?(ii)
On dividing,we get (1+R/100)^3=10025/6690=3/2.
Substituting this value in (i),we get:
P*(3/2)=6690 or P=(6690*2/3)=4460
Hence,the sum is rs.4460. - 1. The compound interest on rs.30000 at 7% per annum is Rs.4347. The period is
Options- A. 2 years
- B. 2.5 years
- C. 3 years
- D. 4 years Discuss
- 2. A sum of money lent at compound interest for 2 years at 20% per annum would fetch Rs.482 more, if the interest was payable half yearly than if it was payable annually . The sum is
Options- A. 10000
- B. 20000
- C. 40000
- D. 50000 Discuss
- 3. Find compound interest on Rs. 8000 at 15% per annum for 2 years 4 months, compounded annually
Options- A. 2109
- B. 3109
- C. 4109
- D. 6109 Discuss
- 4. If the price of 23 toys is 276, then what will the price of 12 toys ?
Options- A. 144
- B. 148
- C. 156
- D. 186 Discuss
- 5. An industrial loom weaves 0.128 metres of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metre of cloth ?
Options- A. 194 seconds
- B. 195 seconds
- C. 196 seconds
- D. 197seconds Discuss
- 6. The difference between compound interest and simple interest on a certain sum of money for 2 years at 5% per annum is Rs. 41. What is the sum of money?
Options- A. Rs.7200
- B. Rs.9600
- C. Rs.16400
- D. Rs.8400 Discuss
- 7. Find the compound interest on Rs. 10,000 in 2 years at 4% per annum, the interest being compounded half-yearly.
Options- A. 524.32
- B. 624.32
- C. 724.32
- D. 824.32 Discuss
- 8. What is the rate of interest p.c.p.a.? I. An amount doubles itself in 5 years on simple interest. II. Difference between the compound interest and the simple interest earned on a certain amount in 2 years is Rs. 400. III. Simple interest earned per annum is Rs. 2000
Options- A. I only
- B. II and III only
- C. All I, II and III
- D. I only or II and III only Discuss
- 9. What annual payment will discharge a debt of Rs.7620 due in 3years at 1623 % per annum interest?
Options- A. 5430
- B. 4430
- C. 3430
- D. 2430 Discuss
- 10. The difference between the simple interest on a certain sum at the rate of 10%per annum for 2 years and compound interest which is compounded every 6 months is Rs.124.05. what is the principal sum
Options- A. Rs.6000
- B. Rs.8000
- C. Rs.12000
- D. none of these Discuss
Compound Interest problems
Search Results
Correct Answer: 2 years
Correct Answer: 20000
Explanation:
Let sum=Rs.x
C.I. when compounded half yearly =
C.I. when compounded annually =
=> x=20000
Correct Answer: 3109
Explanation:
Time = 2 years 4 months = 2(4/12) years = 2(1/3) years.
Amount = Rs'. [8000 X (1+(15/100))^2 X (1+((1/3)*15)/100)]
=Rs. [8000 * (23/20) * (23/20) * (21/20)]
= Rs. 11109. .
:. C.I. = Rs. (11109 - 8000) = Rs. 3109.
Correct Answer: 144
Explanation:
Less toys, Less Price (Direct Proportion)
So, let the price be Rs. x
then,
23:12::276:x => x=(276*12)/23
=> x=144
So price of 12 toys will be Rs. 144
Correct Answer: 195 seconds
Explanation:
Let the time required by x seconds.
Then, More cloth means More time (Direct Proportion)
So, 0.128 : 1 :: 25 : x
=> x = 195.31
So time will be approx 195 seconds
Correct Answer: Rs.16400
Correct Answer: 824.32
Correct Answer: I only or II and III only
Explanation:
Thus I only or (II and III) give answer.
Correct answer is (D)
Correct Answer: 3430
Explanation:
Let each installment be Rs.x. Then,
(P.W. of Rs.x due 1 year hence) + (P.W of Rs.x due 2 years hence) + (P.W of Rs. X due 3 years hence) = 7620.
=> x = 3430
Amount of each installment = Rs.3430
Correct Answer: Rs.8000
Explanation:
Compound Interest on P at 10% for 2 years when interest is compounded half-yearly
=
Simple Interest on P at 10% for 2 years =
Given that difference between compound interest and simple interest = 124.05
=>
P=8000
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