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    Question

    Bike X travels 180 km in t hours and bike Y travels 90

    km in (t/2) hours. If bike X covers 150 km in 2.5 hours, then how many kilometres will bike Y travel in 2t hours?
    A 420 km Correct Answer Incorrect Answer
    B 360 km Correct Answer Incorrect Answer
    C 550 km Correct Answer Incorrect Answer
    D 600 km Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Speed of bike X = 150 / 2.5 = 60 km/hr. So, t = 180 / 60 = 3 hours. Speed of bike Y = 90 / (t/2) = 90 / (3/2) = 90 Ă— (2/3) = 60 km/hr. Required distance in 2t hours = 60 Ă— 2t = 60 Ă— 2 Ă— 3 = 60 Ă— 6 = 360 km.

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