Question 1052743
Car A travels east at a fixed rate of speed.
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There is no "rate of speed."
There's speed, and there's rate.
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 Car B travels west at a speed of 15 miles per hour faster than Car A.  If the cars are 150 miles apart after 2 hours, how fast is each car traveling?
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Depends on where they started from, and when they started.
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A pitiful problem.