A is 50% more efficient than B. If A can complete a piece of work in 12 days, in how many days can B complete the same work? MCQ with Answer and Explanation
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Question #1
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10 men can complete a work in 20 days. If 14 men work at the same rate, in how many days will the work be completed?
Correct Answer: Option C
Explanation:
Total work = 10 × 20 = 200 man-days. Required days = 200/14 = 14.29 days.
Total work = 10 × 20 = 200 man-days. Required days = 200/14 = 14.29 days.
This question belongs to:
Maths
Time and Work
Question #2
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A and B together can do a piece of work in 6 days. If A alone can do it in 18 days, in how many days can B alone complete the work?
Correct Answer: Option B
Explanation:
Combined 1-day work = 1/6. A's 1-day work = 1/18. B's 1-day work = 1/6 - 1/18 = 2/18 = 1/9. Therefore, B alone can complete the work in 9 days.
Combined 1-day work = 1/6. A's 1-day work = 1/18. B's 1-day work = 1/6 - 1/18 = 2/18 = 1/9. Therefore, B alone can complete the work in 9 days.
This question belongs to:
Maths
Time and Work
Question #3
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13 men can complete a work in 17 days. If 17 men work at the same rate, in how many days will the work be completed?
Correct Answer: Option C
Explanation:
Total work = 13 × 17 = 221 man-days. Required days = 221/17 = 13.0 days.
Total work = 13 × 17 = 221 man-days. Required days = 221/17 = 13.0 days.
This question belongs to:
Maths
Time and Work
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