11 men can complete a work in 27 days. If 15 men work at the same rate, in how many days will the work be completed? MCQ with Answer and Explanation
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Question #1
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17 men can complete a work in 27 days. If 21 men work at the same rate, in how many days will the work be completed?
Correct Answer: Option B
Explanation:
Total work = 17 × 27 = 459 man-days. Required days = 459/21 = 21.86 days.
Total work = 17 × 27 = 459 man-days. Required days = 459/21 = 21.86 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 9 days. If A does thrice the work of B in a given time, how many days will A alone take to complete the total work?
Correct Answer: Option B
Explanation:
Ratio of efficiency of A : B = 3 : 1. Combined efficiency = 3 + 1 = 4. Total work = 9 * 4 = 36 units. Time taken by A alone = 36 / 3 = 12 days.
Ratio of efficiency of A : B = 3 : 1. Combined efficiency = 3 + 1 = 4. Total work = 9 * 4 = 36 units. Time taken by A alone = 36 / 3 = 12 days.
This question belongs to:
Maths
Time and Work
Question #3
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23 men can complete a work in 30 days. If 28 men work at the same rate, the work will be completed in:
Correct Answer: Option C
Explanation:
Total work = 690 man-days. Time = 690/28 = 24.64 days.
Total work = 690 man-days. Time = 690/28 = 24.64 days.
This question belongs to:
Maths
Time and Work
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