SOLUTION: Al goes 8 mph; Ben goes 22 mph in the opposite direction. How many hours has Ben traveled when they are 180 miles apart?

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Question 234656: Al goes 8 mph; Ben goes 22 mph in the opposite direction. How many hours has Ben traveled when they are 180 miles apart?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
moving apart at 30 mph
t=D/r
t=180/30
t=6 hrs