SOLUTION: It takes 18 men 6 hours to dig a trench 720 feet long. Working at the same rate, how many feet of trench can be dug by 24 men in 8 hours?

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Question 242964: It takes 18 men 6 hours to dig a trench 720 feet long. Working at the same rate, how many feet of trench can be dug by 24 men in 8 hours?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
It takes 18 men 6 hours to dig a trench 720 feet long.
Working at the same rate, how many feet of trench can be dug by 24 men in 8 hours?
:
We can use man-hrs here.
:
18*6 = 108 man-hrs for 720 ft
that's
720%2F108 = 62%2F3 ft per man-hr
:
24 * 8 * 62%2F3 = 1280 ft