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    matt1595's Avatar
    matt1595 Posts: 5, Reputation: 1
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    #1

    Oct 24, 2010, 11:21 AM
    Substitution, Elimination- Problem solving
    A Porsche travelled 1.6 times as fast as the BMW. The difference of speed was 45 km/h. Determine the speed of each car.
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    matt1595 Posts: 5, Reputation: 1
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    #2

    Oct 24, 2010, 11:23 AM
    Elimination+Substitution- Word Problem
    A porsche travelled 1.6 times as fast as the BMW. The difference of speed was 45 km/h. Determine the speed of each car.
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #3

    Oct 24, 2010, 11:43 AM


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    matt1595 Posts: 5, Reputation: 1
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    #4

    Oct 24, 2010, 12:14 PM
    Comment on galactus's post
    What was the final speeds? The equation you used to get them?
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    Unknown008 Posts: 8,076, Reputation: 723
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    #5

    Oct 24, 2010, 12:38 PM

    In the post of galactus,

    p is the speed of the Porshe and b the speed of the BMW.

    Solve using simultaneous equations to get the value of p and b, the speeds that you are looking for.
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