A can do a work in 17 days and B in 23 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 17 days and B in 23 days. In how many days will they complete 75% of the work together?

A. 7.33

B. 12.33

C. 9.83

D. 14.83

Answer: Option A

Solution (By JKSSB Mock Tests)

Combined time for full work multiplied by 0.75 = 7.33 days.

This question belongs to: Maths Time and Work

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Question #1

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33 men can complete a work in 26 days. If 41 men work at the same rate, how many days are required?

A. 20.93

B. 28.43

C. 23.43

D. 25.93

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Correct Answer: Option A

Explanation:
Total work = 858 man-days. Days = 20.93.

This question belongs to: Maths Time and Work

Question #2

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A can complete a work in 21 days and B in 38 days. If both work together, in how many days will the work be completed?

A. 13.53

B. 16.03

C. 18.53

D. 21.03

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Correct Answer: Option A

Explanation:
Combined rate = 1/21 + 1/38. Time = 13.53 days.

This question belongs to: Maths Time and Work

Question #3

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A can do a work in 24 days and B in 32 days. If they work together and get Rs. 5600 for the work, what is B's share?

A. Rs. 3000

B. Rs. 3200

C. Rs. 2400

D. Rs. 2800

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Correct Answer: Option C

Explanation:
Ratio of time taken by A : B = 24 : 32 = 3 : 4. Ratio of efficiency of A : B = 4 : 3. Total ratio parts = 4 + 3 = 7. B's share = (3 / 7) * 5600 = 3 * 800 = Rs. 2400.

This question belongs to: Maths Time and Work

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