4 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?  Choose the correct choice:
A) 4 days
B) 6 days
C) 7 days
D) 9 days
E) 1 days
1 women's 1 day work = 1/28   1 child's 1 day work = 1/140   (5 women + 10 children)'s 1 day work   = (5/28 + 10/140) = 1/4   5 women and 10 children will complete the work in 4 days.   4 daysnswer: 4 days
<result>A</result>
4 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?