A can finish a work in 18 days and B can do the same work in half the time taken by A. Then, working together, what part of the same work can they finish in a day? MCQ with Answer and Explanation
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Question #1
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A can complete a work in 18 days and B in 16 days. If they work together, the work will be completed in:
Correct Answer: Option D
Explanation:
Combined rate = 1/18 + 1/16. Required time = 8.47 days.
Combined rate = 1/18 + 1/16. Required time = 8.47 days.
This question belongs to:
Maths
Time and Work
Question #2
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A can complete a work in 12 days and B can complete the same work in 32 days. If they work together, in how many days will the work be completed?
Correct Answer: Option C
Explanation:
Combined rate = 1/12 + 1/32. Time = 1 ÷ combined rate = 8.73 days.
Combined rate = 1/12 + 1/32. Time = 1 ÷ combined rate = 8.73 days.
This question belongs to:
Maths
Time and Work
Question #3
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A can complete a work in 11 days and B can complete the same work in 21 days. If they work together, in how many days will the work be completed?
Correct Answer: Option A
Explanation:
Combined rate = 1/11 + 1/21. Time = 1 ÷ combined rate = 7.22 days.
Combined rate = 1/11 + 1/21. Time = 1 ÷ combined rate = 7.22 days.
This question belongs to:
Maths
Time and Work
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