SOLUTION: Noah and Ben are running in the walker street fun run. noah runs at 7mph, ben at 5mph. if they start at the same time, how long will it be before they are 1/3 mile apart?

Question 37569: Noah and Ben are running in the walker street fun run. noah runs at 7mph, ben at 5mph. if they start at the same time, how long will it be before they are 1/3 mile apart?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Since we are considering their distance relative to each other, we can consider this problem this way...
Noah runs 2 mph faster than Ben. Imagine Ben standing still and Noah is running away from him at 2 mph.
Now distance = rate x time.
We need to find the time it takes to cover 1/3 of a mile at a rate of 2 mph.
So we have
D = RT
1/3 = 2T
T = 1/6 hour or 10 minutes
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