SOLUTION: Two automobiles leave St. Louis from exactly the same spot at exactly the same time, one traveling east at 60 mph and the other traveling west at 40 mph. How long does it take befo

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Question 747647: Two automobiles leave St. Louis from exactly the same spot at exactly the same time, one traveling east at 60 mph and the other traveling west at 40 mph. How long does it take before the cars are 150 miles apart?
Answer by FrankM(1040) About Me  (Show Source):
You can put this solution on YOUR website!
The cars are driving away from each other at 100 miles per hour.
150/100 = 1.5 hours.