A can complete a work in 18 days and B in 46 days. If both 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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If 10 men or 20 women can do a piece of work in 13 days, in how many days will 24 men and 17 women complete the same work?
Correct Answer: Option B
Explanation:
10 Men = 20 Women => 1 Man = 2 Women. 24 men + 17 women = 24 * 2 + 17 = 48 + 17 = 65 women. Since 20 women do the work in 13 days, 65 women will do it in (20 * 13) / 65 = 260 / 65 = 4 days.
10 Men = 20 Women => 1 Man = 2 Women. 24 men + 17 women = 24 * 2 + 17 = 48 + 17 = 65 women. Since 20 women do the work in 13 days, 65 women will do it in (20 * 13) / 65 = 260 / 65 = 4 days.
This question belongs to:
Maths
Time and Work
Question #2
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15 men can complete a work in 25 days. If 19 men work at the same rate, in how many days will the work be completed?
Correct Answer: Option D
Explanation:
Total work = 15 × 25 = 375 man-days. Required days = 375/19 = 19.74 days.
Total work = 15 × 25 = 375 man-days. Required days = 375/19 = 19.74 days.
This question belongs to:
Maths
Time and Work
Question #3
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A can complete a work in 17 days and B in 13 days. If they work together, the work will be completed in:
Correct Answer: Option B
Explanation:
Combined rate = 1/17 + 1/13. Required time = 7.37 days.
Combined rate = 1/17 + 1/13. Required time = 7.37 days.
This question belongs to:
Maths
Time and Work
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