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Thread: Along the straight road

  1. July 8th 2012, 05:47 PM #1
    kingman
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    Along the straight road

    I need help in the below problem.
    Thanks
    Attached Thumbnails Attached Thumbnails Along the straight road-tra.jpg  
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  2. July 8th 2012, 10:52 PM #2
    earboth
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    Re: Along the straight road

    Quote Originally Posted by kingman View Post
    I need help in the below problem.
    Thanks
    1. Let r denote the distance XA and s the distance BY. Use the definition of speed: speed = \frac{distance}{time}~\implies~ time = \frac{distance}{speed}

    2. You can extract a system of simultaneous equations from the text:

    \frac r4 = \frac{s+120}6~\wedge~\frac{r+120}6=\frac s4

    Solve for r and s.
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  3. July 9th 2012, 07:54 AM #3
    kingman
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    Re: Along the straight road

    Cannot read your answer . Sorry
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  4. July 9th 2012, 07:56 AM #4
    kingman
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    Re: Along the straight road

    what is the significance of 120m
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