SOLUTION: if it takes 7 men 3 hours to dig a hole, how long will it take 2 men ?

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Question 601833: if it takes 7 men 3 hours to dig a hole, how long will it take 2 men ?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
It takes 7 men 3 hours to dig 1 hole
It would take 1 man 7 times longer to dig 1 hole, so
It takes 1 man 21 hours to dig 1 hole
Twice as man men can do the same job in half the time, so
It takes 2 men 10.5 hours to dig 1 hole