A can complete a work in 12 days and B in 14 days. If they work together, the work will be completed in: MCQ with Answer and Explanation

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A can complete a work in 12 days and B in 14 days. If they work together, the work will be completed in:

A. 6.46

B. 21.46

C. 11.46

D. 16.46

Answer: Option A

Solution (By JKSSB Mock Tests)

Combined rate = 1/12 + 1/14. Required time = 6.46 days.

This question belongs to: Maths Time and Work

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Question #1

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A can complete a work in 16 days and B in 27 days. If both work together, in how many days will the work be completed?

A. 15.05

B. 12.55

C. 17.55

D. 10.05

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Correct Answer: Option D

Explanation:
Combined rate = 1/16 + 1/27. Time = 10.05 days.

This question belongs to: Maths Time and Work

Question #2

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A can complete a work in 31 days and B in 31 days. If both work together, in how many days will the work be completed?

A. 23.0

B. 18.0

C. 15.5

D. 20.5

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Correct Answer: Option C

Explanation:
Combined rate = 1/31 + 1/31. Time = 15.5 days.

This question belongs to: Maths Time and Work

Question #3

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8 men can complete a work in 24 days. If 12 men work at the same rate, in how many days will the work be completed?

A. 18.0

B. 22.0

C. 20.0

D. 16.0

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Correct Answer: Option D

Explanation:
Total work = 8 × 24 = 192 man-days. Required days = 192/12 = 16.0 days.

This question belongs to: Maths Time and Work

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