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

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. 12.33

B. 9.83

C. 14.83

D. 7.33

Answer: Option D

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 Report Error

A can complete a work in 32 days and B in 19 days. If both work together, in how many days will the work be completed?

A. 19.42

B. 16.92

C. 11.92

D. 14.42

Correct Answer: Option C

Explanation:
Combined rate = 1/32 + 1/19. Time = 11.92 days.

This question belongs to: Maths Time and Work

Question #2 Report Error

A can complete a work in 17 days and B can complete the same work in 32 days. If they work together, in how many days will the work be completed?

A. 17.1

B. 13.1

C. 11.1

D. 15.1

Correct Answer: Option C

Explanation:
Combined rate = 1/17 + 1/32. Time = 1 ÷ combined rate = 11.1 days.

This question belongs to: Maths Time and Work

Question #3 Report Error

14 men can complete a work in 24 days. If 18 men work at the same rate, in how many days will the work be completed?

A. 24.67

B. 20.67

C. 18.67

D. 22.67

Correct Answer: Option C

Explanation:
Total work = 14 × 24 = 336 man-days. Required days = 336/18 = 18.67 days.

This question belongs to: Maths Time and Work