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? Select.
A) 10
B) 5
C) 7
D) 14
E) 8
Work done by 1 woman in 1 day=1/70   Work done by 1 children in 1 day=1/140   Work done by 5 women =5*1/70=5/70   Work done by 10 children =10*1/140=10/140   Amount of work 5 women and 10 children take to complete =5/70+10/140=1/7   5 women and 10 children will complete the work in 7 days.   7
<result>C</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?