A can do a work in 13 days and B in 17 days. In how many days will they complete 75% of the work together? MCQ with Answer and Explanation

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A can do a work in 13 days and B in 17 days. In how many days will they complete 75% of the work together?

A. 10.52

B. 5.52

C. 8.02

D. 13.02

Answer: Option B

Solution (By JKSSB Mock Tests)

Combined time for full work multiplied by 0.75 = 5.52 days.

This question belongs to: Maths Time and Work

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Question #1

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25 men can complete a work in 23 days. If 33 men work at the same rate, how many days are required?

A. 22.42

B. 24.92

C. 17.42

D. 19.92

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Correct Answer: Option C

Explanation:
Total work = 575 man-days. Days = 17.42.

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 37 days. If both work together, in how many days will the work be completed?

A. 12.66

B. 10.16

C. 17.66

D. 15.16

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Correct Answer: Option B

Explanation:
Combined rate = 1/14 + 1/37. Time = 10.16 days.

This question belongs to: Maths Time and Work

Question #3

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12 men can complete a work in 28 days. If 16 men work at the same rate, in how many days will the work be completed?

A. 21.0

B. 27.0

C. 23.0

D. 25.0

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Correct Answer: Option A

Explanation:
Total work = 12 × 28 = 336 man-days. Required days = 336/16 = 21.0 days.

This question belongs to: Maths Time and Work

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