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    Question

    Riya travels 45.5 km in 2 hours and 30 minutes. How much

    distance will she cover in 4 hours if she increases her speed by 3 km/h?
    A 84.8 km Correct Answer Incorrect Answer
    B 53.2 km Correct Answer Incorrect Answer
    C 72.5 km Correct Answer Incorrect Answer
    D 61.5 km Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    30 minutes = (30/60) = 0.5 hours

    So, usual speed of Riya = (45.5 / 2.5) = 18.2 km/h

    Increased speed of Riya = 18.2 + 3 = 21.2 km/h

    Therefore, distance covered by her in 4 hours = 21.2 × 4 = 84.8 km

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