10 men can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 men and 10 children take to complete the work?  Choose the correct choice from the following choices:
A) 4	B) 7	C) 3	D) 5	E) nONE
1 man's 1 day's work = 1   70   1 child's 1 day's work = 1   140   (5 men + 10 children)'s day's work = 5 + 10 = 1 + 1 = 1   70 140 14 14 7   5 men and 10 children will complete the work in 7 days.   Correct Answer is 7
<result>B</result>
10 men can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 men and 10 children take to complete the work?