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 (in minutes) will it be before they are 1/5 mile a

Algebra ->  Customizable Word Problem Solvers  -> Travel -> 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 (in minutes) will it be before they are 1/5 mile a      Log On

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Question 1133998: 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 (in minutes) will it be before they are 1/5 mile apart?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Noah runs at 7 mph, Ben at 5 mph.
If they start at the same time, how long (in minutes) will it be before they are 1/5 mile apart?
:
Let t = time for this to be true
Write dist equation; dist = speed * time
N's dist - B's dist = 1/5 mi
7t - 5t = 1%2F5
2t = 1%2F5
t = 1%2F5 * 1%2F2
t = 1%2F10 of an hr
change to min
1%2F10 * 60 = 6 min