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    stang03's Avatar
    stang03 Posts: 3, Reputation: 1
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    #1

    Sep 30, 2007, 01:13 PM
    Advanced Algebra-2nd semester
    On a sales trip, Gail drives the 600 miles to Richmond at a certain speed. The return trip is made at a speed that is 10 mph slower. Total time for the round trip was 22 hours. How fast did Gail travel on each part of the trip?
    tickle's Avatar
    tickle Posts: 23,796, Reputation: 2674
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    #2

    Sep 30, 2007, 01:49 PM
    This doesn't sound correct. You say Gail drives 600 miles at a CERTAIN SPEED, and then the return trip is made at a SPEED THAT IS 10MPH SLOWER.

    How can you determine how fast gail was going if you didn't know the speed she was going in the first place.

    Am I missing something here ?
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    tickle Posts: 23,796, Reputation: 2674
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    #3

    Sep 30, 2007, 01:54 PM
    I guess you didn't learn anything when you asked the square route of 22 to the near est thousand. Hey, and you got a good answer!! Did you follow it through ?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #4

    Sep 30, 2007, 01:59 PM
    This is just classic d=rt. We can use d/r=t, since we are given the distance and time.




    Solve for r. You will get two solutions. Only one will be viable.
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