SOLUTION: if 12 men build 700 houses in 9 days, how long will it take 18 men to build the same 700 houses?

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Question 1029480: if 12 men build 700 houses in 9 days, how long will it take 18 men to build the same 700 houses?
Answer by Natolino1983(23) About Me  (Show Source):
You can put this solution on YOUR website!
Let's say that w is the individual velocity, and d the amount of days when 18 men are used.
w= 700/(12×9) = 175/27 (houses/day).
So d×w×18 =700, then d= 700/(w×18) =108/18 =6 days.