SOLUTION: Two automobiles leave the same location traveling in opposite directions. The blue car travels x mph; the red car travels y mph. How long will it be before the cars are 200 miles a

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Question 428269: Two automobiles leave the same location traveling in opposite directions. The blue car travels x mph; the red car travels y mph. How long will it be before the cars are 200 miles apart, if the red car is traveling 10 mph slower?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Two automobiles leave the same location traveling in opposite directions. The blue car travels x mph; the red car travels y mph. How long will it be before the cars are 200 miles apart, if the red car is traveling 10 mph slower?
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Equations:
y = x-10 mph
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The separation rate of the two cars is x+y or x+x-10 = 2x-10
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time = distance/rate
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time = 200/(2x-10) = 200/(2(x-5)) = 100/(x-5) hrs.
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Cheers,
Stan H.
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