SOLUTION: three men can build a wall in 10 hours.how many men would be edneeded to build the wall in 7.5 hours?

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Question 457138: three men can build a wall in 10 hours.how many men would be edneeded to build the wall in 7.5 hours?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
three men can build a wall in 10 hours.how many men would be needed to build the wall in 7.5 hours?
:
Man-hours to build the wall: 3 * 10 = 30
:
let m = no. of men required to do it 7.5 hrs
7.5m = 30
m = 30%2F7.5
m = 4 men to build it in 7.5 hrs