A can do a piece of work in 10 days and B can do the same work in 15 days. If they work together, in how many days will the work be completed? MCQ with Answer and Explanation
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Question #1
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A can complete a work in 22 days and B in 20 days. If they work together, the work will be completed in:
Correct Answer: Option D
Explanation:
Combined rate = 1/22 + 1/20. Required time = 10.48 days.
Combined rate = 1/22 + 1/20. Required time = 10.48 days.
This question belongs to:
Maths
Time and Work
Question #2
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A and B work together. A alone can complete the work in 18 days and B alone in 34 days. What percentage of the total daily work is contributed by A?
Correct Answer: Option C
Explanation:
A share = (1/18) / (1/18+1/34) ×100 = 65.38%.
A share = (1/18) / (1/18+1/34) ×100 = 65.38%.
This question belongs to:
Maths
Time and Work
Question #3
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A can do a work in 19 days and B in 29 days. In how many days will they complete 75% of the work together?
Correct Answer: Option A
Explanation:
Combined time for full work multiplied by 0.75 = 8.61 days.
Combined time for full work multiplied by 0.75 = 8.61 days.
This question belongs to:
Maths
Time and Work
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