Mangala completes a piece of work in 12 days, Raju completes the same work in 36 days. If both of them work together, then the number of days required to complete the work is? Choose the correct answer: A) 5 days B) 6 days C) 7 days D) 8 days E) 9 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.   That is, the required No. of days = 12 Ã— 36/48 = 9 days.   9 days)
<result>E</result>
Mangala completes a piece of work in 12 days, Raju completes the same work in 36 days. If both of them work together, then the number of days required to complete the work is?