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    103rhsur's Avatar
    103rhsur Posts: 1, Reputation: 1
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    #1

    Apr 16, 2009, 10:00 PM
    how to find out when two people will meet in a homework equation
    At 2:00n p.m. Brad walks toward Lydia's house at 2 mph and Lydia walks toward Brad's house at 4 mph. When will they meet, if their homes are 9 miles apart?
    ROLCAM's Avatar
    ROLCAM Posts: 1,420, Reputation: 23
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    #2

    Apr 16, 2009, 11:15 PM

    They will meet at 3:30 p.m.

    They would have walked for 1.5 hours.

    (9) /( 2 + 4 ) = 1.5
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #3

    Apr 17, 2009, 05:55 AM

    B = distance Brad walks
    L = distance Lydia walks
    T = elapsed time
    Distance = Rate times Time

    B = 2 T
    L = 4 T
    B+L = 9

    You can replace B and L with the first two equations and then solve for T. You have to add T to 2:00 p.m. to figure out the exact time that they meet.

    After solving for T, you can solve for B and L, the distances that each travel.

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