21 men can complete a work in 29 days. If 29 men work at the same rate, how many days are required? MCQ with Answer and Explanation

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

A. 23.5

B. 26.0

C. 21.0

D. 28.5

Answer: Option C

Solution (By JKSSB Mock Tests)

Total work = 609 man-days. Days = 21.0.

This question belongs to: Maths Time and Work

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Question #1

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19 men can complete a work in 32 days. If 27 men work at the same rate, how many days are required?

A. 25.02

B. 30.02

C. 27.52

D. 22.52

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Correct Answer: Option D

Explanation:
Total work = 608 man-days. Days = 22.52.

This question belongs to: Maths Time and Work

Question #2

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A can do a work in 11 days and B in 17 days. In how many days will they complete 75% of the work together?

A. 7.51

B. 12.51

C. 10.01

D. 5.01

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Correct Answer: Option D

Explanation:
Combined time for full work multiplied by 0.75 = 5.01 days.

This question belongs to: Maths Time and Work

Question #3

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19 men can complete a work in 17 days. If 23 men work at the same rate, in how many days will the work be completed?

A. 16.04

B. 20.04

C. 14.04

D. 18.04

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Correct Answer: Option C

Explanation:
Total work = 19 × 17 = 323 man-days. Required days = 323/23 = 14.04 days.

This question belongs to: Maths Time and Work

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