A can complete a work in 29 days. What percentage of the work will be completed in 7 days? MCQ with Answer and Explanation

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A can complete a work in 29 days. What percentage of the work will be completed in 7 days?

A. 31.64

B. 24.14

C. 26.64

D. 29.14

Answer: Option B

Solution (By JKSSB Mock Tests)

Completed percentage = (7/29)×100 = 24.14%.

This question belongs to: Maths Time and Work

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Question #1

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12 men can complete a piece of work in 12 days. If 6 men leave after 6 days, how many more days will it take to complete the remaining work?

A. 10 days

B. 6 days

C. 12 days

D. 8 days

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Correct Answer: Option C

Explanation:
Total work = 12 * 12 = 144 man-days. In 6 days, 12 men complete = 12 * 6 = 72 man-days. Remaining work = 144 - 72 = 72 man-days. Remaining men = 12 - 6 = 6 men. Time taken by 6 men to complete remaining work = 72 / 6 = 12 days.

This question belongs to: Maths Time and Work

Question #2

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A can do a work in 12 days and B in 22 days. They work together for 5 days. What percentage of work remains?

A. 50.61

B. 40.61

C. 45.61

D. 35.61

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Correct Answer: Option D

Explanation:
Remaining work = (1 - 5*(1/12+1/22)) ×100 = 35.61%.

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 18 days and B alone in 22 days. What percentage of the total daily work is contributed by A?

A. 55.0

B. 57.5

C. 62.5

D. 60.0

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Correct Answer: Option A

Explanation:
A share = (1/18) / (1/18+1/22) ×100 = 55.0%.

This question belongs to: Maths Time and Work

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