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? MCQ with Answer and Explanation

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. 18.04

B. 20.04

C. 16.04

D. 14.04

Answer: Option D

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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Question #1 Report Error

A can complete a work in 24 days and B in 45 days. If both work together, in how many days will the work be completed?

A. 20.65

B. 18.15

C. 15.65

D. 23.15

Correct Answer: Option C

Explanation:
Combined rate = 1/24 + 1/45. Time = 15.65 days.

This question belongs to: Maths Time and Work

Question #2 Report Error

A can complete a work in 14 days and B in 30 days. If both work together, in how many days will the work be completed?

A. 17.05

B. 12.05

C. 9.55

D. 14.55

Correct Answer: Option C

Explanation:
Combined rate = 1/14 + 1/30. Time = 9.55 days.

This question belongs to: Maths Time and Work

Question #3 Report Error

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

A. 13.88

B. 11.38

C. 6.38

D. 8.88

Correct Answer: Option C

Explanation:
Combined time for full work multiplied by 0.75 = 6.38 days.

This question belongs to: Maths Time and Work