SOLUTION: Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7 mph, Ben at 5 mph. If they start at the same time, how long will it be before they are 1/3 mile apart?

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Question 125757: Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7 mph, Ben at 5 mph. If they start at the same time, how long will it be before they are 1/3 mile apart?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7 mph, Ben at 5 mph. If they start at the same time, how long will it be before they are 1/3 mile apart?
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Noah DATA:
Rate = 7 mph ; time = x hrs. ; distance = 7x miles
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Ben DATA:
Rate = 5 mph ; time = x hrs. ; distance = 5x miles
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EQUATION:
Noah distance - Ben distance = (1/3) mile
7x - 5x = (1/3)
2x = 1/3
x = 1/6 hr = 10 minutes
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Cheers,
Stan H.