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    Question

    A scooter moving at 35 km/hr increased its speed by 5 km/hr

    after ‘x’ hours and travelled (x + 10) hours more. If it travelled 540 km during those (x + 10) hours, then what was the distance it travelled during the first ‘x’ hours?
    A 190 km Correct Answer Incorrect Answer
    B 122.5 km Correct Answer Incorrect Answer
    C 128.5 km Correct Answer Incorrect Answer
    D 175 km Correct Answer Incorrect Answer

    Solution

    ATQ,

    40 × (x + 10) = 540

    Or, x + 10 = 13.5

    Or, x = 3.5

    Therefore, required distance travelled = 35 × 3.5 = 122.5 km

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