Aptitude Compound Interest Test Paper 1
1) What is the compound interest on Rs. 2500 for 2 years at rate of interest 4% per annum?
- Rs. 180
- Rs. 204
- Rs. 210
- Rs. 220
The Correct answer is (B)
Explanation:
Principal (P) = Rs. 2500
Rate of interest(r) = 4%
Time (t) = 2 years
Compound Interest = Amount – Principal
2) What is the amount for a sum of money Rs.7500 at 6% rate of interest C.I. for 2 years?
- Rs. 8427
- Rs. 8417
- Rs. 8400
- Rs. 8390
The Correct answer is (A)
Explanation:
Principal = Rs. 7500
r = 6%
t = 2 years
3) On lending a certain sum of money on C.I. one gets Rs.9050 in 2 years and Rs.9500 in 3 years. What is the rate of interest?
- 5%
- 4.5%
- 5.5 %
- 6%
The Correct answer is (A)
Explanation:
Amount after 3 years = Rs. 9500
Amount after 2 years = Rs. 9050
Interest of one year= 9500 – 9050 = 450
t = 1 year
Solution 2: Quicker Method
Apply formula; Rate of interest(r): 
Y= Rs. 9500
X = 9050
4) Ramesh borrowed Rs. 3600 at a certain rate of interest C.I. and the sum grows to Rs. 4624 in 2 years. What is the rate of interest?
- 12.3%
- 13.3%
- 14.3%
- 15.3%
The Correct answer is (B)
Explanation:
Principal = Rs. 3600
Amount = Rs. 4624
t = 2 years
We have;
5) On a certain sum of money the compound interest Rs. 318 is earned in 2 years. If the rate of interest is 12%, what is the principal amount?
- Rs. 1250
- Rs.1300
- Rs. 1200
- Rs. 1150
The Correct answer is (A)
Explanation:
We have;
C.I. = Rs. 318
r = 12%
t = 2 years
Compound Interest Aptitude Test Paper 2
Compound Interest Concept