SOLUTION: If it takes 8 men 9 hours to dig a hole in 20 minutes,how long would it take 10 men to dig a hole if they work at the same rate?

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Question 828474: If it takes 8 men 9 hours to dig a hole in 20 minutes,how long would it take 10 men to dig a hole if they work at the same rate?
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!

8 men----------------20 minutes
1 man----------------20*8 = 160 minutes, the time for 1 man.

10 men?
10%281%2F160%29 because the rate of each man is added in a sum.
10%2F160=highlight%281%2F16%29, jobs per minute
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That means the job would be done in 16 minutes, if done by 10 men. Look at the numbers as given. You may be able to see in your head, how this should be 80% of the originally stated 20 minutes for 8 men.