A can complete a work in 24 days and B in 18 days. If they work together, the work will be completed in: MCQ with Answer and Explanation

A can complete a work in 24 days and B in 18 days. If they work together, the work will be completed in:

A. 10.29

B. 15.29

C. 25.29

D. 20.29

Answer: Option A

Combined rate = 1/24 + 1/18. Required time = 10.29 days.

This question belongs to: Maths Time and Work

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Question #1 Report Error

14 men can complete a work in 26 days. If 19 men work at the same rate, the work will be completed in:

A. 29.16

B. 24.16

C. 34.16

D. 19.16

Correct Answer: Option D

Explanation:
Total work = 364 man-days. Time = 364/19 = 19.16 days.

This question belongs to: Maths Time and Work

Question #2 Report Error

A can complete a work in 14 days and B can complete the same work in 24 days. If they work together, in how many days will the work be completed?

A. 10.84

B. 14.84

C. 8.84

D. 12.84

Correct Answer: Option C

Explanation:
Combined rate = 1/14 + 1/24. Time = 1 ÷ combined rate = 8.84 days.

This question belongs to: Maths Time and Work

Question #3 Report Error

A can do a work in 9 days and B in 29 days. In how many days will they complete 75% of the work together?

A. 5.15

B. 12.65

C. 7.65

D. 10.15

Correct Answer: Option A

Explanation:
Combined time for full work multiplied by 0.75 = 5.15 days.

This question belongs to: Maths Time and Work