<PRE><B>Question 958152</B>
Let x=amount of time it takes to finish off the garage
It takes 7*10=70 man-days to build the garage
Halfway through building the garage would take 5 days; 7*5=35 man-days
This would leave 35 man-days to complete by 7+3=10 men
Soooo 10x=35
x=3.5 days------ time to finish off the garage (a)
5+3.5=8.5 days----time to build the garage altogether (b)

BTW, one man takes 70 days to build the garage

Hope this helps---ptaylor
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