Selected MCQ

Current Question
A sum becomes Rs. 1210 in 2 years at 10% per annum compound interest. What is the principal?
  • A. Rs. 1000
  • B. Rs. 1100
  • C. Rs. 1200
  • D. Rs. 900
Correct Answer: A
Explanation:
1000 × (1.1)² = 1210.
Related Question 1
The principal that amounts to Rs. 4913 in 3 years at 6¼% per annum compound interest is ____.
  • A. Rs. 3096
  • B. Rs. 4076
  • C. Rs. 4085
  • D. Rs. 4096
Correct Answer: D
Explanation:
Using the compound interest formula, principal = 4913 / (1.0625 ) ) )³ = 4096.
Related Question 2
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.
Related Question 3
If a sum becomes Rs. 1210 in 2 years at CI 10%, principal is ____.
  • A. Rs. 900
  • B. Rs. 1000
  • C. Rs. 1100
  • D. Rs. 1200
Correct Answer: B
Explanation:
Reverse calculation gives 1000.
Related Question 4
If a sum amounts to Rs. 1331 in 3 years at 10% compound interest, principal is ____.
  • A. Rs. 900
  • B. Rs. 1000
  • C. Rs. 1100
  • D. Rs. 1200
Correct Answer: B
Explanation:
1000 × (1.1) ) )³ = 1331.
Related Question 5
If the compound interest for 2 years is Rs. 210 and the simple interest is Rs. 200, find the principal?
  • A. Rs. 1000
  • B. Rs. 2000
  • C. Rs. 1500
  • D. Rs. 2500
Correct Answer: A
Explanation:
Difference used to find the rate, then principal = 1000.