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EXOEXOEXO

  • one year ago

a freight train and a passenger train start toward each other at the same time from two towns that are 500 miles apart. after 3 hours the trains are still 80 miles apart. if the average rate of speed of the passenger train is 20 miles per hour faster than the average rate of speed of the freight train, what is the average rate of speed, in miles per hour, of the freight train?

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  1. Mertsj
    • one year ago
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    |dw:1436831590135:dw|

  2. Mertsj
    • one year ago
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    If they are still 80 miles apart, the sum of their distances must be 500-80 which is 420. Write and solve the equation that says that.

  3. EXOEXOEXO
    • one year ago
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    3(r+20)+3r=420 3r+60+3r=420 6r+60=420 6r=360 r=60

  4. Mertsj
    • one year ago
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    yep

  5. EXOEXOEXO
    • one year ago
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    thank you

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