10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 8 women and 12 children take to complete the work? Options:  A) 4  B) 5  C) 7  D) 8  E) 2
1 women's 1 day work = 1/70   1 child's 1 day work = 1/140   (8 women + 12 children)'s 1 day work   = (8/70 + 12/140) = 1/5   8 women and 4 children will complete the work in 5 days.   5
<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 8 women and 12 children take to complete the work?