A can do a work in 15 days and B in 29 days. In how many days will they complete 75% of the work together? MCQ with Answer and Explanation
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Question #1
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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?
Correct Answer: Option A
Explanation:
A's 1-day work = 1/10, B's 1-day work = 1/15. Combined 1-day work = 1/10 + 1/15 = 5/30 = 1/6. Therefore, they will complete the work together in 6 days.
A's 1-day work = 1/10, B's 1-day work = 1/15. Combined 1-day work = 1/10 + 1/15 = 5/30 = 1/6. Therefore, they will complete the work together in 6 days.
This question belongs to:
Maths
Time and Work
Question #2
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A can complete a work in 22 days. What percentage of work will A complete in 6 days?
Correct Answer: Option C
Explanation:
Percentage completed = (6/22) × 100 = 27.27%.
Percentage completed = (6/22) × 100 = 27.27%.
This question belongs to:
Maths
Time and Work
Question #3
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A and B work together. A alone can complete the work in 18 days and B alone in 22 days. What percentage of the total daily work is contributed by A?
Correct Answer: Option C
Explanation:
A share = (1/18) / (1/18+1/22) ×100 = 55.0%.
A share = (1/18) / (1/18+1/22) ×100 = 55.0%.
This question belongs to:
Maths
Time and Work
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