Aptitude Round QuestionCompound InterestFree Download
Compound Interest Aptitude Questions
Compound Interest is the difference between the original principal and
final amount. Compound Interest is similar to the Simple Interest shortcut
tricks. As we know that same for some time but some cases it's different
from Simple Interest. In some cases, of the Compound Interest, the interest
varies according to time. So candidates before going to appear for Compound
Interest Quiz should know the topics which are covered in the particular
concept.
Compound Interest Formulae
Compound Interest basic terms A = Amount
P = Principal
R = Rate of Interest
N = Number of Years
1. Interest Compounded Yearly
Amount (A) = Principal (P) X ( 1 + Rate of Interest (R) / 100 )Number of
Years (N)
2. Interest Compounded HalfYearly
Amount (A) = Principal (P) X [ 1 + Rate of Interest (R) / 2 / 100 ]2 X
Number of Years (N)
(or) Principal (P) = [ 1 + Rate of Interest (R) / 200 ] 2 X Number of Years
(N)
3. Interest Compounded Quarterly
Amount (A) = Principal (P) X [ 1 + Rate of Interest (R) / 4 / 100 ]
(or) Principal (P) [ 1 + Rate of Interest (R) / 400 ] 4 X Number of Years
(N)
Find compound interest on Rs. 8000 at 15% per annum for 2 years 4 months,
compounded annually
A) 2109

B) 3109

C) 4109

D) 6109

Answer & Explanation
Answer: B) 3109
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
A) 10000

B) 20000

C) 40000

D) 50000

Answer & Explanation
Answer: B) 20000
The difference between compound interest and simple interest on a sum for
two years at 8% per annum, where the interest is compounded annually is
Rs.16. if the interest were compounded half yearly , the difference in two
interests would be nearly
A) Rs.24.64

B) Rs.21.85

C) Rs.16

D) Rs.16.80

Answer & Explanation
Answer: A) Rs.24.64
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.
A) 4360

B) 4460

C) 4560

D) 4660

Answer & Explanation
Answer: B) 4460
The compound interest on rs.30000 at 7% per annum is Rs.4347. The period is
A) 2 years

B) 2.5 years

C) 3 years

D) 4 years

Answer & Explanation
Answer: A) 2 years
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
A) I only

B) II and III only

C) All I, II and III

D) I only or II and III only

Answer & Explanation
Answer: D) I only or II and III only
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
A) Rs.6000

B) Rs.8000

C) Rs.12000

D) none of these

Answer & Explanation
Answer: B) Rs.8000
Find the compound interest on Rs. 10,000 in 2 years at 4% per annum, the
interest being compounded halfyearly.
A) 524.32

B) 624.32

C) 724.32

D) 824.32

Answer & Explanation
Answer: D) 824.32
1. What is the difference between the compound interests on
Rs. 5000 for 1^{1}/_{2} years at 4% per
annum compounded yearly and halfyearly?

A. Rs. 2.04

B. Rs. 4.80

C. Rs. 3.06

D. Rs. 8.30

Here is the answer and explanation
Answer : Option A
2. A bank offers 5% compound interest calculated on
halfyearly basis. A customer deposits Rs. 1600 each on 1st
January and 1st July of a year. At the end of the year, the
amount he would have gained by way of interest is:

A. Rs. 120

B. Rs. 121

C. Rs. 123

D. Rs. 122

Here is the answer and explanation
Answer : Option B
There is 80% increase in an amount in 8 years at simple
interest. What will be the compound interest of Rs. 14,000
after 3 years at the same rate?

A. Rs.3794

B. Rs.3714

C. Rs.4612

D. Rs.4634

Here is the answer and explanation
Answer : Option D
The compound interest on Rs. 30,000 at 7% per annum is Rs.
4347. The period (in years) is:

A. 1

B. 2

C. 3

D. 3.5

Here is the answer and explanation
Answer : Option B
The difference between simple and compound interests
compounded annually on a certain sum of money for 2 years
at 4% per annum is Re. 1. The sum is:

A. Rs.600

B. Rs.645

C. Rs.525

D. Rs.625

Here is the answer and explanation
Answer : Option D
6. The difference between compound interest and simple
interest on an amount of Rs. 15,000 for 2 years is Rs. 96.
What is the rate of interest per annum?

A. 9%

B. 12%

C. 8%

D. 6%

Here is the answer and explanation
Answer : Option C
If the simple interest on a sum of money for 2 years at 5%
per annum is Rs. 60, what is the compound interest on the
same at the same rate and for the same time?

A. Rs. 63.5

B. Rs. 62

C. Rs. 61.5

D. Rs. 64

Here is the answer and explanation
Answer : Option C
The difference between simple interest and compound on Rs.
900 for one year at 10% per annum reckoned halfyearly is:

A. Rs. 3

B. Rs. 2.25

C. Rs. 4.5

D. Rs. 4

Here is the answer and explanation
Answer : Option B
What will be the compound interest on a sum of Rs. 40,000
after 3 years at the rate of 11 p.c.p.a.?

A. Rs. 14705.24

B. Rs. 14602.25

C. Rs. 14822.26

D. Rs. 14322.10

Here is the answer and explanation
Answer : Option A
. At what rate of compound interest per annum will a sum of
Rs. 1400 become Rs. 1573.04 in 2 years?

A. 4%

B. 5%

C. 6%

D. 8%

Here is the answer and explanation
Answer : Option C
11. The least number of complete years in which a sum of
money put out at 20% compound interest will be more than
doubled is

A. 5

B. 4

C. 4

D. 2

Here is the answer and explanation
Answer : Option B
The effective annual rate of interest corresponding to a
nominal rate of 6% per annum payable halfyearly is:

A. 6.07%

B. 6.08%

C. 6.06%

D. 6.09%

Here is the answer and explanation
Answer : Option D
Arun invested an amount of Rs. 20000 in a fixed deposit
scheme for 2 years at compound interest rate 4 p.c.p.a. How
much amount will Arun get on maturity of the fixed deposit?

A. 20342

B. 21632

C. 22324

D. 24120

Here is the answer and explanation
Answer : Option B
Simple interest on a certain sum of money for 4 years at 5%
per annum is half the compound interest on Rs. 3000 for 2
years at 10% per annum. The sum placed on simple interest
is:

A. Rs.1575

B. Rs. 2200

C. Rs. 1200

D. Rs. 1625

Here is the answer and explanation
Answer : Option A
The compound interest on a certain sum for 2 years at 10%
per annum is Rs. 525. The simple interest on the same sum
for double the time at half the rate percent per annum is:

A. Rs. 500

B. Rs. 400

C. Rs. 450

D. Rs. 600

Here is the answer and explanation
Answer : Option A
16. The difference between simple interest and compound on
Rs. 2400 for one year at 10% per annum reckoned halfyearly
is:

A. Rs. 4

B. Rs. 6

C. Rs. 3

D. Rs. 2

Here is the answer and explanation
Answer : Option B
17. The Simple interest on a certain sum for 2 years at 20%
per annum is Rs. 80. The corresponding compound interest is

A. Rs. 66

B. Rs. 82

C. Rs. 86

D. Rs. 88

Here is the answer and explanation
Answer : Option D
18. The Compound interest on Rs. 20,480 at 6 ^{1}/ _{4} % per annum for 2 years 73 days, is :

A. Rs. 2929

B. Rs. 2219

C. Rs. 3021

D. Rs. 3049

Here is the answer and explanation
Answer : Option A
19. A sum amounts to Rs. 882 in 2 years at 5% compound
interest. The sum is

A. Rs. 800

B. Rs. 822

C. Rs. 840

D. Rs. 816

Here is the answer and explanation
Answer : Option A
20. A sum put out at 4% compound interest payable
halfyearly amounts to Rs. 13265.10 in 1^{1}/ _{2} years. The sum is

A. Rs. 12500

B. Rs. 11200

C. Rs. 8840

D. Rs. 12600

Here is the answer and explanation
Answer : Option A
21. A sum of money is borrowed and paid back in two annual
instalments of Rs. 882 each allowing 5% compound interest.
The sum borrowed was:

A. Rs.1820

B. Rs.1640

C. Rs.1260

D. Rs.1440

Here is the answer and explanation
Answer : Option B
What sum invested for 2 years at 14% compounded annually
will grow to Rs. 5458.32?

A. 4120

B. 3300

C. 4200

D. 4420

Here is the answer and explanation
Answer : Option C
If the difference between the simple interest and compound
interests on some principal amount at 20% for 3 years is
Rs. 48, then the principal amount is

A. Rs. 365

B. Rs. 325

C. Rs. 395

D. Rs. 375

Here is the answer and explanation
Answer : Option D
Andrews earns an interest of Rs. 1596 for the third year
and Rs. 1400 for the second year on the same sum. Find the
rate of interest if it is lent at compound interest.

A. 12%

B. 13%

C. 14%

D. 15%

Here is the answer and explanation
Answer : Option C
25. The population of a town is 40,000. It decreases by 20
per thousand per year. Find out the population after 2
years.

A. 38484

B. 38266

C. 38416

D. 38226

Here is the answer and explanation
Answer : Option C
The difference between simple and compound interests
compounded annually on a certain sum of money for 2 years
at 4% per annum is Re. 1. The sum (in Rs.) is:

Answer: Option A


There is 60% increase in an amount in 6 years at simple
interest. What will be the compound interest of Rs. 12,000
after 3 years at the same rate?

A.

Rs. 2160

B.

Rs. 3120

C.

Rs. 3972

D.

Rs. 6240

E.

None of these

Answer: Option C

What is the difference between the compound interests on
Rs. 5000 for 1 years at 4% per annum compounded yearly and
halfyearly?

A.

Rs. 2.04

B.

Rs. 3.06

C.

Rs. 4.80

D.

Rs. 8.30

Answer: Option A


The compound interest on Rs. 30,000 at 7% per annum is Rs.
4347. The period (in years) is:

Answer: Option A


What will be the compound interest on a sum of Rs. 25,000
after 3 years at the rate of 12 p.c.p.a.?

A.

Rs. 9000.30

B.

Rs. 9720

C.

Rs. 10123.20

D.

Rs. 10483.20

E.

None of these

Answer: Option C


At what rate of compound interest per annum will a sum of
Rs. 1200 become Rs. 1348.32 in 2 years?

Answer: Option A

The least number of complete years in which a sum of money
put out at 20% compound interest will be more than doubled
is:

Answer: Option B


Albert invested an amount of Rs. 8000 in a fixed deposit
scheme for 2 years at compound interest rate 5 p.c.p.a. How
much amount will Albert get on maturity of the fixed
deposit?

A.

Rs. 8600

B.

Rs. 8620

C.

Rs. 8820

D.

None of these

Answer: Option C

The effective annual rate of interest corresponding to a
nominal rate of 6% per annum payable halfyearly is:

Answer: Option D


Simple interest on a certain sum of money for 3 years at 8%
per annum is half the compound interest on Rs. 4000 for 2
years at 10% per annum. The sum placed on simple interest
is:

A.

Rs. 1550

B.

Rs. 1650

C.

Rs. 1750

D.

Rs. 2000

Answer: Option C

If the simple interest on a sum of money for 2 years at 5%
per annum is Rs. 50, what is the compound interest on the
same at the same rate and for the same time?

A.

Rs. 51.25

B.

Rs. 52

C.

Rs. 54.25

D.

Rs. 60

Answer: Option A


The difference between simple interest and compound on Rs.
1200 for one year at 10% per annum reckoned halfyearly is:

A.

Rs. 2.50

B.

Rs. 3

C.

Rs. 3.75

D.

Rs. 4

E.

None of these

Answer: Option B

The difference between compound interest and simple
interest on an amount of Rs. 15,000 for 2 years is Rs. 96.
What is the rate of interest per annum?

A.

8

B.

10

C.

12

D.

Cannot be determined

E.

None of these

Answer: Option A

The compound interest on a certain sum for 2 years at 10%
per annum is Rs. 525. The simple interest on the same sum
for double the time at half the rate percent per annum is:

A.

Rs. 400

B.

Rs. 500

C.

Rs. 600

D.

Rs. 800

Answer: Option B

1. Find the compound interest and the amount on Rs.8000 at 5% per annum for
3 years when C.I is reckoned yearly?

A.
Rs.1261

B.
Rs.1440

C.
Rs.1185

D.
Rs.1346
Answer & Explanation
Answer: Option A
If Rs.7500 are borrowed at C.I at the rate of 4% per annum, then after 2
years the amount to be paid is?

A.
Rs.8082

B.
Rs.7800

C.
Rs.8100

D.
Rs.8112
Answer & Explanation
Answer: Option D
Find out the C.I on Rs.5000 at 4% p.a. compound halfyearly for 1 1/2
years.

A.
Rs.420.20

B.
Rs.319.06

C.
Rs.306.04

D.
Rs.294.75
Answer & Explanation
Answer: Option C
Reena took a loan of Rs. 1200 with simple interest for as many years as the
rate of interest. If she paid Rs. 432 as interest at the end of the loan
period, what was the rate of interest?
A) 3.6

B) 6

C) 18

D) Cannot be determined

Answer & Explanation
Answer: B) 6
What annual payment will discharge a debt of Rs.7620 due in 3years at1623
% per annum interest?
A) 5430

B) 4430

C) 3430

D) 2430

Answer & Explanation
Answer: C) 3430
A certain sum amounts to Rs.7350 in 2 years and to Rs.8575 in 3 years.find
the sum and rate percent
A) 3400

B) 4400

C) 5400

D) 6400

Answer & Explanation
Answer: C) 5400
If the simple interest on a sum of money at 5% per annum for 3 years is Rs.
1200, find the compound interest on the same sum for the same period at the
same rate.
A) 1261

B) 1271

C) 1281

D) 1291

Answer & Explanation
Answer: A) 1261
The compound interest on a sum of money for 2 years is rs.832 and the
simple interest on the same sum for the same period is rs.800 .the
difference between the compound interest and simple interest for 3 years
A) Rs.48

B) Rs.66.56

C) Rs.98.56

D) None of these

Answer & Explanation
Answer: C) Rs.98.56
Find the compound interest on Rs. 16,000 at 20% per annum for 9 months,
compounded quarterly
A) 2422

B) 2522

C) 2622

D) 2722

Answer & Explanation
Answer: B) 2522
On a sum of money, the simple interest for 2 years is Rs. 660,while the
compound interest is Rs.696.30,the rate of interest being the same in both
the cases. The rate of interest is
A) 10%

B) 11%

C) 12%

D) 13%

Answer & Explanation
Answer: B) 11%
The population of a town was 3600 three years back. It is 4800 right now.
What will be the population three years down the line, if the rate of
growth of population has been constant over the years and has been
compounding annually?
A) Rs.600

B) Rs,6400

C) Rs.6500

D) Rs.6600

Answer & Explanation
Answer: B) Rs,6400
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