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19 December, 06:47

Elizabeth competed in a race and found that her times for the swimming, cycling and running legs were in the ratio 3:1:2

If the quickest leg took 10 minutes, how many minutes did she take to complete the whole race?

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Answers (2)
  1. 19 December, 06:48
    0
    60 mins

    Step-by-step explanation:

    Let the total time spent in all activities be X

    So (1 divided by the total ratio) of the total time = 10 [ because the least ratio has the shortest lap]

    So total ratio = 3+1 + 2=6

    Therefore time spent on cycling is

    1/6 * X = 10mins

    X = 10 * 6 mins = 60 mins

    Total time for all activities = 60mins
  2. 19 December, 07:04
    0
    30 mins

    Step-by-step explanation:

    let time for cycling be a

    -> time swimming = 3*a

    -> time running legs = 2*a = 10 mins - > a = 5mins

    Whole time = 3*a+a+2*a = 6*a = 6*5 = 30 mins
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