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    Question

    Two cars ‘X’ and ‘Y’, which were 750 km apart,

    started traveling towards each other at the same time and met after 6 hours. If the speed of car ‘X’ is 10 km/h more than the speed of car ‘Y’, then find the speed of car ‘X’.
    A 47.7 Correct Answer Incorrect Answer
    B 50.2 Correct Answer Incorrect Answer
    C 67.5 Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Sum of the distance travelled by both cars = 750 km

    Let the speed of car Y = ‘x’ km/h

    So, speed of car X = ‘x + 10’ km/h

    So, 6x + 6(x + 10) = 750

    Or, 6x + 6x + 60 = 750

    Or, 12x = 690

    Or, x = 57.5

    So, the speed of car X = (x + 10) = (57.5 + 10) = 67.5 km/h

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