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? MCQ with Answer and Explanation

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. 12.51

B. 10.01

C. 7.51

D. 5.01

Answer: Option D

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

This question belongs to: Maths Time and Work

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Question #1 Report Error

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

A. 23.0

B. 21.0

C. 25.0

D. 19.0

Correct Answer: Option D

Explanation:
Total work = 19 × 23 = 437 man-days. Required days = 437/23 = 19.0 days.

This question belongs to: Maths Time and Work

Question #2 Report Error

A can complete a work in 9 days and B in 13 days. If they work together, the work will be completed in:

A. 20.32

B. 10.32

C. 15.32

D. 5.32

Correct Answer: Option D

Explanation:
Combined rate = 1/9 + 1/13. Required time = 5.32 days.

This question belongs to: Maths Time and Work

Question #3 Report Error

A can do a work in 11 days and B in 23 days. In how many days will they complete 75% of the work together?

A. 5.58

B. 10.58

C. 8.08

D. 13.08

Correct Answer: Option A

Explanation:
Combined time for full work multiplied by 0.75 = 5.58 days.

This question belongs to: Maths Time and Work