18 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?  Answers: A) 8 days B) 6 days C) 7 days D) 9 days E) 1 days
1 women's 1 day work = 1/126   1 child's 1 day work = 1/140   (5 women + 10 children)'s 1 day work   = (5/126+ 10/140) = 1/9   5 women and 10 children will complete the work in 9 days.   Answer: 9 days
<result>D</result>
18 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?