Q. A can complete a work in 12 days and B can complete the same work in 18 days. In how many days can they complete the work together?
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Correct Answer: (A)
7.2 days
Explanation: A's one-day work = 1/12, B's one-day work = 1/18. Together = 5/36. Time = 36/5 = 7.2 days.
Explanation by: Deepak Sahoo
A's one-day work = 1/12, B's one-day work = 1/18. Together = 5/36. Time = 36/5 = 7.2 days.