A can complete a work in 25 days and B in 25 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 25 days and B in 25 days. If both work together, in how many days will the work be completed?

A. 17.5

B. 12.5

C. 15.0

D. 20.0

Answer: Option B

Solution (By JKSSB Mock Tests)

Combined rate = 1/25 + 1/25. Time = 12.5 days.

This question belongs to: Maths Time and Work

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Question #1

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A and B work together. A alone can complete the work in 18 days and B alone in 36 days. What percentage of the total daily work is contributed by A?

A. 71.67

B. 69.17

C. 66.67

D. 74.17

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Correct Answer: Option C

Explanation:
A share = (1/18) / (1/18+1/36) ×100 = 66.67%.

This question belongs to: Maths Time and Work

Question #2

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A can complete a work in 14 days and B in 30 days. If both work together, in how many days will the work be completed?

A. 12.05

B. 14.55

C. 17.05

D. 9.55

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Correct Answer: Option D

Explanation:
Combined rate = 1/14 + 1/30. Time = 9.55 days.

This question belongs to: Maths Time and Work

Question #3

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A can complete a work in 18 days. What percentage of work will A complete in 6 days?

A. 33.33

B. 43.33

C. 48.33

D. 38.33

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Correct Answer: Option A

Explanation:
Percentage completed = (6/18) × 100 = 33.33%.

This question belongs to: Maths Time and Work

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