11. Simple Interest Questions for Competitive Exams

In this section you can learn and practice Aptitude Questions based on "Simple Interest" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

Simple Interest Questions

1. Jyoti 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?

(1) 6
(2) 7
(3) 8
(4) 9

2. A sum of Rs. 725 is lent in the beginning of a year at a certain rate of interest. After 8 months, a sum of Rs. 362.50 more is lent but at the rate twice the former. At the end of the year, Rs. 33.50 is earned as interest from both the loans. What was the original rate of interest? 

(1) 3.46%
(2) 3.36%
(3) 3.47%
(4) 3.45%

3. If A lends Rs. 3500 to B at 10% p.a. and B lends the same sum to C at 11.5% p.a., then the gain of B (in Rs.) in a period of 3 years is 

(1) 140
(2) 130
(3) 135.50
(4) 157.50

4. A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is : 

(1) 698
(2) 400
(3) 600
(4) 800

5. Rs. 800 becomes Rs. 956 in 3 years at a certain rate of simple interest. If the rate of interest is increased by 4%, what amount will Rs. 800 become in 3 years. 

(1) 952
(2) 452
(3) 1052
(4) 1152

6. A certain sum becomes Rs. 20720 in four years and 24080 in six years at simple interest. Find sum and rate of interest?

(1) 14000 Rs, 13% p.a.
(2) 13000 Rs, 12% p.a.
(3) 14000 Rs, 12% p.a.
(4) 13000 Rs, 13% p.a.

7. If simple interest on a certain sum of money for 8 years at 4% per annum is same as the simple interest on Rs. 560 for 8 years at the rate of 12% per annum then the sum of money is 

(1) 1520
(2) 1680
(3) 1580
(4) 1620

8. A sum of Rs. 725 is lent in the beginning of a year at a certain rate of interest. After 8 months, a sum of Rs. 362.50 more is lent but at the rate twice the former. At the end of the year, Rs. 33.50 is earned as interest from both the loans. What was the original rate of interest?

(1) 2.46%
(2) 3.46%
(3) 4.46%
(4) 5.46%

9. How much time will it take for an amount of 450 to yield 81 as interest at 4.5% per annum of simple interest?

(1) 1 years
(2) 2 years
(3) 3 years
(4) 4 years

10. Rs.1000 is invested at 5 % p.a simple interest if the interest is added to the principle after every 10 years. The amount will become Rs. 2000 After 

(1) 14
(2) 15
(3) 16 2/3 years
(4) 17

Ans :- 

1-1,     2-1,      3-4,        4-1,      5-3,
6-3,     7-2,      8-2,        9-4,      10-3

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