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27 May, 20:04

Noelle and karina both leave the Internet cafe at the same time, but in opposite directions. If karina travels 9 mph faster than noelle and after 8 hours they are 232 miles apart, how fast is each traveling?

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  1. 27 May, 20:17
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    Noelle goes east at N mph.

    Karina travels west at N + 9

    then their velocity between them is (N + N + 9)

    After 8 hours they travel 8 (2N + 9) = 232

    (2N + 9) = 29

    2N = 20

    N = 10 mph for Noelle

    N+9=19 mph for Karina
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