Selected MCQ

Current Question
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 1
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 2
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.
Related Question 3
P completes work in 24 days, Q in 9 days, R in 12 days. Time taken together is ____.
  • A. 10
  • B. 9
  • C. 11
  • D. 12
Correct Answer: A
Explanation:
Sum of rates gives time = 10 days.
Related Question 4
P and Q complete work in 8 days, Q and R in 12 days. Time for all three is ____.
  • A. 7
  • B. 8
  • C. 9
  • D. 10
Correct Answer: B
Explanation:
Combined work rate leads to 8 days.
Related Question 5
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).