A can complete a work in 12 days and B in 17 days. If they work together, the work will be completed in: MCQ with Answer and Explanation

A can complete a work in 12 days and B in 17 days. If they work together, the work will be completed in:

A. 7.03

B. 12.03

C. 17.03

D. 22.03

Answer: Option A

Combined rate = 1/12 + 1/17. Required time = 7.03 days.

This question belongs to: Maths Time and Work

No comments yet. Be the first to start the discussion!

Question #1 Report Error

16 men can complete a work in 26 days. If 20 men work at the same rate, in how many days will the work be completed?

A. 26.8

B. 24.8

C. 20.8

D. 22.8

Correct Answer: Option C

Explanation:
Total work = 16 × 26 = 416 man-days. Required days = 416/20 = 20.8 days.

This question belongs to: Maths Time and Work

Question #2 Report Error

A and B work together. A alone can complete the work in 18 days and B alone in 28 days. What percentage of the total daily work is contributed by A?

A. 65.87

B. 60.87

C. 68.37

D. 63.37

Correct Answer: Option B

Explanation:
A share = (1/18) / (1/18+1/28) ×100 = 60.87%.

This question belongs to: Maths Time and Work

Question #3 Report Error

A can complete a work in 22 days and B in 12 days. If they work together, the work will be completed in:

A. 17.76

B. 12.76

C. 7.76

D. 22.76

Correct Answer: Option C

Explanation:
Combined rate = 1/22 + 1/12. Required time = 7.76 days.

This question belongs to: Maths Time and Work