A can complete a work in 22 days and B in 12 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 22 days and B in 12 days. If they work together, the work will be completed in:

A. 17.76

B. 7.76

C. 12.76

D. 22.76

Answer: Option B

Solution (By JKSSB Mock Tests)

Combined rate = 1/22 + 1/12. Required time = 7.76 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 23 days and B in 21 days. If both work together, in how many days will the work be completed?

A. 13.48

B. 18.48

C. 15.98

D. 10.98

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Correct Answer: Option D

Explanation:
Combined rate = 1/23 + 1/21. Time = 10.98 days.

This question belongs to: Maths Time and Work

Question #2

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A can complete a work in 12 days and B in 17 days. If they work together, the work will be completed in:

A. 22.03

B. 12.03

C. 7.03

D. 17.03

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Correct Answer: Option C

Explanation:
Combined rate = 1/12 + 1/17. Required time = 7.03 days.

This question belongs to: Maths Time and Work

Question #3

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A and B work together. A alone can complete the work in 24 days and B alone in 22 days. What percentage of the total daily work is contributed by A?

A. 47.83

B. 52.83

C. 55.33

D. 50.33

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Correct Answer: Option A

Explanation:
A share = (1/24) / (1/24+1/22) ×100 = 47.83%.

This question belongs to: Maths Time and Work

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