A can complete a work in 27 days and B in 37 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 27 days and B in 37 days. If both work together, in how many days will the work be completed?

A. 15.61

B. 23.11

C. 18.11

D. 20.61

Answer: Option A

Solution (By JKSSB Mock Tests)

Combined rate = 1/27 + 1/37. Time = 15.61 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 13 days and B in 42 days. If both work together, in how many days will the work be completed?

A. 17.43

B. 12.43

C. 9.93

D. 14.93

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Correct Answer: Option C

Explanation:
Combined rate = 1/13 + 1/42. Time = 9.93 days.

This question belongs to: Maths Time and Work

Question #2

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A can complete a work in 22 days and B in 20 days. If they work together, the work will be completed in:

A. 15.48

B. 25.48

C. 20.48

D. 10.48

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Correct Answer: Option D

Explanation:
Combined rate = 1/22 + 1/20. Required time = 10.48 days.

This question belongs to: Maths Time and Work

Question #3

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A can complete a work in 17 days and B can complete the same work in 17 days. If they work together, in how many days will the work be completed?

A. 8.5

B. 12.5

C. 14.5

D. 10.5

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Correct Answer: Option A

Explanation:
Combined rate = 1/17 + 1/17. Time = 1 ÷ combined rate = 8.5 days.

This question belongs to: Maths Time and Work

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