Selected MCQ

Current Question
The present average age of a couple and their daughter is 35 years. After 15 years, what will their average age be?
  • A. 43 years
  • B. 40 years
  • C. 48 years
  • D. 45 years
Correct Answer: D
Explanation:
Each person ages by 15 years, so the average increases by 15.
Related Question 1
Khadija’s age after 1 year is twice her age 10 years ago. Find the present age.
  • A. 19
  • B. 20
  • C. 21
  • D. 22
Correct Answer: C
Explanation:
Solve Equation.
Related Question 2
Three years ago, the average age of 6 members was 19. Find the present age of a boy.
  • A. 1 year
  • B. 1.5 years
  • C. 2 years
  • D. 2.5 years
Correct Answer: A
Explanation:
Total age difference method.
Related Question 3
Value of the plant depreciates 10% annually. Find the present value after 2 years, given the initial amount.
  • A. Rs. 8000
  • B. Rs. 10000
  • C. Rs. 18000
  • D. Rs. 8100
Correct Answer: D
Explanation:
Value = P(0.9)².
Related Question 4
The present average age of a family of five is 26 years. If conditions change, what is the new average?
  • A. 18 years
  • B. 14 years
  • C. 20 years
  • D. 16 years
Correct Answer: C
Explanation:
Based on the given adjustments, the new average becomes 20 years.
Related Question 5
If the ratio of ages of A and B is 3:5, after 10 years it becomes 5:7. Present age of A is ____.
  • A. 15
  • B. 18
  • C. 20
  • D. 25
Correct Answer: A
Explanation:
Solving Equation gives A = 15.