A can complete a work in 26 days and B in 42 days. If both work together, in how many days will the work be completed? MCQ with Answer and Explanation

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A can complete a work in 26 days and B in 42 days. If both work together, in how many days will the work be completed?

A. 16.06

B. 21.06

C. 23.56

D. 18.56

Answer: Option A

Solution (By JKSSB Mock Tests)

Combined rate = 1/26 + 1/42. Time = 16.06 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 21 days and B in 25 days. If they work together, the work will be completed in:

A. 11.41

B. 21.41

C. 16.41

D. 26.41

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Correct Answer: Option A

Explanation:
Combined rate = 1/21 + 1/25. Required time = 11.41 days.

This question belongs to: Maths Time and Work

Question #2

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A can complete a work in 18 days and B in 39 days. If both work together, in how many days will the work be completed?

A. 19.82

B. 14.82

C. 17.32

D. 12.32

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Correct Answer: Option D

Explanation:
Combined rate = 1/18 + 1/39. Time = 12.32 days.

This question belongs to: Maths Time and Work

Question #3

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A can complete a work in 20 days and B in 25 days. If they work together, the work will be completed in:

A. 26.11

B. 16.11

C. 11.11

D. 21.11

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Correct Answer: Option C

Explanation:
Combined rate = 1/20 + 1/25. Required time = 11.11 days.

This question belongs to: Maths Time and Work

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