Selected MCQ

Current Question
A sum is put at simple interest for 2 years. If compounded annually, it becomes Rs. 750. What is the original sum?
  • A. Rs. 750
  • B. Rs. 700
  • C. Rs. 940
  • D. Rs. 820
Correct Answer: A
Explanation:
Equal amounts indicate no compounding effect.
Related Question 1
A sum at simple interest for 3 years becomes Rs. 6000. What is the principal?
  • A. Rs. 4000
  • B. Rs. 9000
  • C. Rs. 5000
  • D. Rs. 6000
Correct Answer: D
Explanation:
The given amount corresponds directly.
Related Question 2
A sum at simple interest for 2 years becomes Rs. 750. What is the principal?
  • A. Rs. 750
  • B. Rs. 700
  • C. Rs. 820
  • D. Rs. 940
Correct Answer: A
Explanation:
Direct relation from the given condition.
Related Question 3
A sum becomes Rs. 9800 in 5 years and Rs. 12005 in 8 years. Find the rate of simple interest.
  • A. 5%
  • B. 8%
  • C. 12%
  • D. 15%
Correct Answer: C
Explanation:
A difference over time gives a rate.
Related Question 4
There is a 60% increase in a sum in 6 years at simple interest. What will be the compound interest on Rs. 12000 for 3 years at the same rate?
  • A. Rs. 2160
  • B. Rs. 3120
  • C. Rs. 3972
  • D. Rs. 6240
Correct Answer: C
Explanation:
Rate = 10%, CI = 12000[(1.1)³ − 1] = 3972.
Related Question 5
A sum becomes triple in 3 years at compound interest. In how many years will it become 9 times?
  • A. 18
  • B. 12
  • C. 9
  • D. 6
Correct Answer: D
Explanation:
Growth is exponential → 6 years.