15 men can complete a work in 13 days. If 19 men work at the same rate, in how many days will the work be completed? MCQ with Answer and Explanation

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15 men can complete a work in 13 days. If 19 men work at the same rate, in how many days will the work be completed?

A. 12.26

B. 10.26

C. 16.26

D. 14.26

Answer: Option B

Solution (By JKSSB Mock Tests)

Total work = 15 × 13 = 195 man-days. Required days = 195/19 = 10.26 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 24 days and B alone in 34 days. What percentage of the total daily work is contributed by A?

A. 58.62

B. 66.12

C. 61.12

D. 63.62

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Correct Answer: Option A

Explanation:
A share = (1/24) / (1/24+1/34) ×100 = 58.62%.

This question belongs to: Maths Time and Work

Question #2

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A and B work together. A alone can complete the work in 30 days and B alone in 22 days. What percentage of the total daily work is contributed by A?

A. 42.31

B. 47.31

C. 49.81

D. 44.81

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Correct Answer: Option A

Explanation:
A share = (1/30) / (1/30+1/22) ×100 = 42.31%.

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 30 days and B alone in 36 days. What percentage of the total daily work is contributed by A?

A. 62.05

B. 57.05

C. 59.55

D. 54.55

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Correct Answer: Option D

Explanation:
A share = (1/30) / (1/30+1/36) ×100 = 54.55%.

This question belongs to: Maths Time and Work

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