πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!


    Question

    A boat takes 2 hours 20 minutes to cover 140 km

    downstream and 2.5 hours to cover 75 km upstream. If the boat covers 'y' km upstream and '2y' km downstream in 8 hours, find the value of 1.5y .
    A 120 Correct Answer Incorrect Answer
    B 180 Correct Answer Incorrect Answer
    C 100 Correct Answer Incorrect Answer
    D 140 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Downstream speed = (140 Γ· 2.33) = 60 km/h Upstream speed = (75 Γ· 2.5) = 30 km/h Now, (y Γ· 30) + (2y Γ· 60) = 8 β‡’ (2y + 2y) Γ· 60 = 8 β‡’ 4y = 480 β‡’ y = 120 Required value = 1.5 Γ— 120 = 180

    Practice Next

    Relevant for Exams:

    ask-question