A completes a work in 10 days and B complete the same work in 15 days. If both of them work together, then the number of days required to complete the work will be	Answers
A) 6 days B) 9 days C) 10 days D) 12 days E) 13 days
If A 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 = 10 × 15/ 25= 6 days.   6 daysnswer : 6 days
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A completes a work in 10 days and B complete the same work in 15 days. If both of them work together, then the number of days required to complete the work will be