A can complete a work in 12 days and B can complete the same work in 17 days. If they work together, in how many days will the work be completed? MCQ with Answer and Explanation

A can complete a work in 12 days and B can complete the same work in 17 days. If they work together, in how many days will the work be completed?

A. 7.03

B. 13.03

C. 11.03

D. 9.03

Answer: Option A

Combined rate = 1/12 + 1/17. Time = 1 ÷ combined rate = 7.03 days.

This question belongs to: Maths Time and Work

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Question #1 Report Error

A can complete a work in 19 days and B in 41 days. If both work together, in how many days will the work be completed?

A. 15.48

B. 20.48

C. 12.98

D. 17.98

Correct Answer: Option C

Explanation:
Combined rate = 1/19 + 1/41. Time = 12.98 days.

This question belongs to: Maths Time and Work

Question #2 Report Error

A can complete a work in 16 days and B in 20 days. If both work together, in how many days will the work be completed?

A. 16.39

B. 11.39

C. 13.89

D. 8.89

Correct Answer: Option D

Explanation:
Combined rate = 1/16 + 1/20. Time = 8.89 days.

This question belongs to: Maths Time and Work

Question #3 Report Error

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

A. 23.43

B. 25.93

C. 20.93

D. 28.43

Correct Answer: Option C

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

This question belongs to: Maths Time and Work