A can do a work in 9 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 9 days and B in 17 days. In how many days will they complete 75% of the work together?

A. 4.41

B. 11.91

C. 9.41

D. 6.91

Answer: Option A

Solution (By JKSSB Mock Tests)

Combined time for full work multiplied by 0.75 = 4.41 days.

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. 30.02

B. 22.52

C. 27.52

D. 25.02

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Correct Answer: Option B

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 complete a work in 13 days and B in 26 days. After working together for 5 days, what percentage of work remains?

A. 47.31

B. 44.81

C. 49.81

D. 42.31

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Correct Answer: Option D

Explanation:
Remaining work = (1 - 5*(1/13+1/26))×100 = 42.31%.

This question belongs to: Maths Time and Work

Question #3

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A can complete a work in 12 days and B can complete the same work in 27 days. If they work together, in how many days will the work be completed?

A. 8.31

B. 14.31

C. 12.31

D. 10.31

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Correct Answer: Option A

Explanation:
Combined rate = 1/12 + 1/27. Time = 1 ÷ combined rate = 8.31 days.

This question belongs to: Maths Time and Work

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