Michael completes a piece of work in 6 days, Madan completes the same work in 18 days. If both of them work together, then the number of days required to complete the work is?  Select:
A) 4.5 days	B) 8 days	C) 10 days	D) 12 days	E) 14 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 = 6 × 18/24 = 4.5 days   4.5 daysnswer : 4.5 days
<result>A</result>
Michael completes a piece of work in 6 days, Madan completes the same work in 18 days. If both of them work together, then the number of days required to complete the work is?