A completes a work in 12 days and B complete the same work in 24 days. If both of them work together, then the number of days required to complete the work will be?  Choose the correct answer: A) 8 days B) 9 days C) 11 days D) 13 days E) 14 days
If 8 days can complete a work in x days and B can complete the same work in y days, then, both   of them together can complete the work in x y/ x+ y days   Therefore, here, the required number of days = 12 × 24/ 36 = 8 days   8 days)
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A completes a work in 12 days and B complete the same work in 24 days. If both of them work together, then the number of days required to complete the work will be?