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4 October, 11:16

Kevin takes T minutes to travel to work. Jane travels the same distance to work but goes 10% faster than Kevin. Find an expression, in terms of T, for the number of minutes that Jane takes to travel to work.

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  1. 4 October, 12:50
    0
    Time jane takes: T + 10T/100
  2. 4 October, 15:13
    0
    Let Kelvin speed be s units per minute.

    than Janes speed 1.1s units per minute.

    time taken by kelvin for d unit distance = T = d/s

    time taken by jane for d unit distance = T J = d/1.1/s

    T J = d/1.1/s = d/s 1.1

    Time of jane = T/1.1 = 0.91 T
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