A can complete a work in 27 days and B in 44 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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12 men can complete a work in 8 days. How many days will 16 men take to complete the same work?
Correct Answer: Option A
Explanation:
Using the formula M1 * D1 = M2 * D2: 12 * 8 = 16 * D2. 96 = 16 * D2. D2 = 96 / 16 = 6 days.
Using the formula M1 * D1 = M2 * D2: 12 * 8 = 16 * D2. 96 = 16 * D2. D2 = 96 / 16 = 6 days.
This question belongs to:
Maths
Time and Work
Question #2
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A can complete a work in 17 days and B can complete the same work in 22 days. If they work together, in how many days will the work be completed?
Correct Answer: Option C
Explanation:
Combined rate = 1/17 + 1/22. Time = 1 รท combined rate = 9.59 days.
Combined rate = 1/17 + 1/22. Time = 1 รท combined rate = 9.59 days.
This question belongs to:
Maths
Time and Work
Question #3
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A can complete a work in 16 days and B in 21 days. If they work together, the work will be completed in:
Correct Answer: Option D
Explanation:
Combined rate = 1/16 + 1/21. Required time = 9.08 days.
Combined rate = 1/16 + 1/21. Required time = 9.08 days.
This question belongs to:
Maths
Time and Work
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