Selected MCQ

Current Question
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 1
The simple interest on Rs. 12000 for 5 years is Rs. 7200. Find the compound interest for the same period and rate.
  • A. Rs. 3502.80
  • B. Rs. 3052.40
  • C. Rs. 3054.80
  • D. Rs. 3052.80
Correct Answer: D
Explanation:
Rate = 12%, apply the compound interest formula.
Related Question 2
If the difference between compound and simple interest for 2 years is Rs. 50 on Rs. 1000, find the rate?
  • A. 5%
  • B. 10%
  • C. 7%
  • D. 8%
Correct Answer: A
Explanation:
Difference = P(R/100)² → R = 5%.
Related Question 3
A loan of Rs. 1200 at simple interest equals years equal to rate. Find rate.
  • A. 3.6
  • B. 6
  • C. 18
  • D. Cannot determine
Correct Answer: B
Explanation:
The SI formula gives a rate of 6%.
Related Question 4
A sum of Rs. 2500 amounts to Rs. 3875 in 4 years. Find the rate of simple interest.
  • A. 12.25%
  • B. 12%
  • C. 6%
  • D. 13.75%
Correct Answer: D
Explanation:
SI = 1375 ⇒ rate = 13.75%.
Related Question 5
A sum at compound interest becomes Rs. 800 in 3 years and Rs. 840 in 4 years. Find rate.
  • A. 2.5%
  • B. 4%
  • C. 5%
  • D. 6⅔%
Correct Answer: C
Explanation:
Annual growth rate derived.