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anonymous

  • 5 years ago

two cities are 4050 miles apart. a plane leaves one of them, traveling towards the other at an average speed of 420 miles per hour. At the same time a plane leaves the other city, traveling towards the first, at an average speed of 390 miles per hour. How long will it take them to meet?

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  1. anonymous
    • 5 years ago
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    help!!

  2. anonymous
    • 5 years ago
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    They are moving together with a speed of (420+390)mph

  3. anonymous
    • 5 years ago
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    so the meet in how many hours?

  4. anonymous
    • 5 years ago
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    Time = distance/speed = 4050/(420+390) = ...

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