SOLUTION: If it takes 9 guys to clear 6 acres in 1 hour how many guys does it take to clear 20 acres in 3 hours?

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Question 720260: If it takes 9 guys to clear 6 acres in 1 hour how many guys does it take to clear 20 acres in 3 hours?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
If it takes 9 guys to clear 6 acres in 1 hour
Find how many man-hrs per acre %289%2A1%29%2F6 = 1.5 man-hrs per acre
:
how many guys does it take to clear 20 acres in 3 hours?
let m = no. of men to accomplish this
3m = 1.5(20)
3m = 30
m = 30/3
m = 10 men