ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    Tina has to reach the railway station. If she walks at 12

    km/h, she is 2 hours late. If she walks at 20 km/h, she reaches 1 hour early. Find the distance between her house and the station.
    A 100 km Correct Answer Incorrect Answer
    B 235 km Correct Answer Incorrect Answer
    C 90 km Correct Answer Incorrect Answer
    D 155 km Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the distance = 'd' km

    Let the usual time = 't' hours

    Then, (d/12) = t + 2

    Or, t = (d/12) - 2

    And, (d/20) = t - 1

    Or, t = (d/20) + 1

    So, (d/12) - (d/20) = 3

    LCM of 12 and 20 = 60

    Or, (5d - 3d)/60 = 3

    Or, 2d = 180

    So, d = 90

    Therefore, the distance = 90 km

    Practice Next
    More Time and distance Questions

    Relevant for Exams:

    ask-question