10 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 from the following choices
A) 7  B) 9  C) 21  D) 3  E) None
1 woman's 1 day's work =	1/70   1 child's 1 day's work =	1/140   (5 women + 10 children)'s day's work =(5/70 + 10/140) = (	1/14 + 1/14) = 1/7   5 women and 10 children will complete the work in 7 days.   7nswer: 7
<result>A</result>
10 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?