A can complete a work in 11 days and B in 22 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 11 days and B in 22 days. If they work together, the work will be completed in:

A. 17.33

B. 22.33

C. 12.33

D. 7.33

Answer: Option D

Solution (By JKSSB Mock Tests)

Combined rate = 1/11 + 1/22. Required time = 7.33 days.

This question belongs to: Maths Time and Work

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Question #1

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29 men can complete a work in 32 days. If 37 men work at the same rate, how many days are required?

A. 25.08

B. 27.58

C. 32.58

D. 30.08

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Correct Answer: Option A

Explanation:
Total work = 928 man-days. Days = 25.08.

This question belongs to: Maths Time and Work

Question #2

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11 men can complete a work in 21 days. If 15 men work at the same rate, in how many days will the work be completed?

A. 17.4

B. 21.4

C. 19.4

D. 15.4

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Correct Answer: Option D

Explanation:
Total work = 11 × 21 = 231 man-days. Required days = 231/15 = 15.4 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 can complete the same work in 20 days. If they work together, in how many days will the work be completed?

A. 12.0

B. 10.0

C. 16.0

D. 14.0

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Correct Answer: Option B

Explanation:
Combined rate = 1/20 + 1/20. Time = 1 ÷ combined rate = 10.0 days.

This question belongs to: Maths Time and Work

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