# Simple and Compound interest problems – Aptitude Questions and Answers

Simple and Compound interest
Simple and Compound interest Problems – Aptitude Questions and Answers:

This is aptitude on Simple and compound interest  Problems Question and answers with explanation for different interviews and competitive and entrance exams.

Simple and Compound interest Formulas:
1.Rambo took a loan of Rs. 1200 with simple interest for as many years as the rate of interest. If he 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) None of these

2. Mr. Hamilton invested an amount of Rs. 13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be Rs. 3508, what was the amount invested in Scheme B?
A) Rs. 6400
B) Rs. 6500
C) Rs. 7200
D) Rs. 7500

3.A sum of Rs. 12,500 amounts to Rs. 15,500 in 4 years at the rate of simple interest. What is the rate of interest?
A) 3%
B) 4%
C) 5%
D) 6%

4.How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest?
A) 3.5 years
B) 4 years
C) 4.5 years
D) 5 years

5. A sum of money trebles itself in 15 years 6 months. In how many years would it double itself?
A) 6 years 3 months
B) 7 years 9 months
C) 8 years 3 months
D) 9 years 6 months

6.An amount of Rs.1,00,000 is invested in two types of shares. The first yields an interest of 9% p.a. and the second, 11% p.a. If the total interest at the end of one year is [9(3/4)]%, then the amount invested in each share was :
A) Rs.52,500, Rs.47,500
B) Rs.62,500, Rs.37,500
C) Rs.72,500, Rs.27,500
D) Rs.82,500, Rs.17.500

7.Mr.Devilal Singh invested an amount of Rs.13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be Rs.3508, what was the amount invested in Scheme B?
A) Rs.6400
B) Rs.6500
C) Rs.7200
D) Rs.7500

8.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) 10.5%
C) 12%
D) None of these

9.What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 9 years?
A) 1 : 3
B) 1 : 4
C) 2 : 3
D) None of these

10. Aman took loan from a bank at the rate of 12% p.a. simple interest. After 3 years he had to pay Rs. 5400 interest only for the period. The principal amount borrowed by him was:
A) Rs. 2000
B) Rs. 10,000
C) Rs. 15,000
D) Rs. 20,000