Selected MCQ

Current Question
P, Q, and R complete work in 30, 24, and 20 days. Total work done in 10 days is ____.
  • A. 10
  • B. 8
  • C. 18
  • D. 19
Correct Answer: C
Explanation:
Combined work = 10 × (sum of rates).
Related Question 1
C completes half the work in 6 days, D completes 1/3 in 5 days. Total time taken?
  • A. 10 days
  • B. 12 days
  • C. 8 days
  • D. 9 days
Correct Answer: A
Explanation:
Combined rates calculation.
Related Question 2
Bilal can complete the work in 15 days, and Jalal in 12 days. In 4 days, what fraction of the work is done?
  • A. 3/5
  • B. 4/7
  • C. 2/5
  • D. 1/4
Correct Answer: C
Explanation:
Combined rate × time.
Related Question 3
If 12 men can complete a work in 8 days, 16 men will complete in ____.
  • A. 6 days
  • B. 8 days
  • C. 10 days
  • D. 12 days
Correct Answer: A
Explanation:
Inverse proportion → (12×8)/16 = 6.
Related Question 4
A man can complete a work in 12 days. He works for 4 days. Remaining work is ____.
  • A. 1/2
  • B. 1/3
  • C. 2/3
  • D. 3/4
Correct Answer: C
Explanation:
Work done = 4/12 = 1/3 → remaining = 2/3.
Related Question 5
If P finishes work in 18 days and Q in 15 days, and Q leaves after 10 days, remaining work is done in ____.
  • A. 8
  • B. 6
  • C. 4
  • D. 2
Correct Answer: B
Explanation:
Remaining work divided by P’s rate.