A can complete a work in 16 days and B in 27 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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A can complete a work in 13 days and B in 28 days. If both work together, in how many days will the work be completed?
Correct Answer: Option C
Explanation:
Combined rate = 1/13 + 1/28. Time = 8.88 days.
Combined rate = 1/13 + 1/28. Time = 8.88 days.
This question belongs to:
Maths
Time and Work
Question #2
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A can complete a work in 13 days and B can complete the same work in 28 days. If they work together, in how many days will the work be completed?
Correct Answer: Option C
Explanation:
Combined rate = 1/13 + 1/28. Time = 1 รท combined rate = 8.88 days.
Combined rate = 1/13 + 1/28. Time = 1 รท combined rate = 8.88 days.
This question belongs to:
Maths
Time and Work
Question #3
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If 3 men or 4 women can plow a field in 43 days, how long will 7 men and 5 women take to plow it?
Correct Answer: Option D
Explanation:
3 Men = 4 Women => 1 Man = 4/3 Women. 7 men + 5 women = 7 * (4/3) + 5 = 28/3 + 5 = 43/3 women. Since 4 women take 43 days, 43/3 women will take (4 * 43) / (43/3) = 4 * 3 = 12 days.
3 Men = 4 Women => 1 Man = 4/3 Women. 7 men + 5 women = 7 * (4/3) + 5 = 28/3 + 5 = 43/3 women. Since 4 women take 43 days, 43/3 women will take (4 * 43) / (43/3) = 4 * 3 = 12 days.
This question belongs to:
Maths
Time and Work
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