A man, a woman and a boy can together complete a piece of work in 3 days. If a woman alone can do it in 6 days and a boy alone in 18 days, how long will a man take to complete the work?	Choose the correct choice:	A) 5days	B) 8days	C) 7days	D) 9days	E) 8days
Explanation:   (1 Man + 1 woman + 1 boy)’s 1day’s work = 1/3   1wo man’s 1 day work = 1/6   1boy’s 1 day’s work = 1/18   man alone can finish the work in 9 days.   Answer: Option 9days
<result>D</result>
A man, a woman and a boy can together complete a piece of work in 3 days. If a woman alone can do it in 6 days and a boy alone in 18 days, how long will a man take to complete the work?