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 most appropriate option:
A) 4	B) 7	C) 9	D) 14	E) None
1 woman's 1 day's work = 1/70   1 Child's 1 day's work = 1/140   5 Women and 10 children 1 day work = (5/70+10/140)=1/7   So 5 women and 10 children will finish the work in 7 days.   Answer: 7
<result>B</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?