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Thread: today's question in aptitude 4 u

  1. #1
    Join Date
    Oct 2009
    Posts
    10

    Exclamation today's question in aptitude 4 u

    In 100m race,Z runs at speed of 8kmph.If Z gives a start of 4m to y and stil beat him by 15 secs.Y's speed=?

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  2. #2
    Join Date
    Sep 2009
    Posts
    9

    Default

    z's speed is 40/18 mps so he needs 45 secs for 100m.
    as he starts when y at 4 but comes 15 secs b4 so
    the taken by y for the 96m is 60 secs.
    therefore, the speed of y is 5kmph.

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