SOLUTION: If it takes seven men 2.5 hours to clean up a street after a New Year's party, how long (in hour and minutes) would it take for three men to do the job?
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Question 459219: If it takes seven men 2.5 hours to clean up a street after a New Year's party, how long (in hour and minutes) would it take for three men to do the job? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! If it takes seven men 2.5 hours to clean up a street after a New Year's party, how long (in hour and minutes) would it take for three men to do the job?
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# of men and time to do the job are inversely related.
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t = k/m
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Solve for "k" using "it takes seven men 2.5 hours to clean up a street":
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2.5 = k/7
k = 17.5
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Equation:
t = 17.5/m
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How long (in hour and minutes) would it take for three men to do the job?
time = 17.5/3
time = 5.83 hrs
= 5 hr (0.83)60 min
= 5 hr 50 minutes
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Cheers,
Stan H.
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