📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

    ⚡ Month End Offer - Flat 52% Off On All Courses! Enroll Now ⚡
    00:00:00 AM Left

    Question

    A boat can cover 60 km in still water and 75 km in

    downstream in 4 hours and 3 hours respectively. Find the time taken by the boat to cover 36 km upstream and 55 km downstream.
    A 12.4 hours Correct Answer Incorrect Answer
    B 10.4 hours Correct Answer Incorrect Answer
    C 9.4 hours Correct Answer Incorrect Answer
    D 7.4 hours Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Speed of the boat in still water = 60/4 = 15 km/h Downstream speed of the boat = 75/3 = 25 km/h Speed of the stream = 25 – 15 = 10 km/h Upstream speed of the boat = 15 – 10 = 5 km/h Time taken to cover 36 km upstream and 55 km downstream = 36/5 + 55/25 = 7.2 + 2.2 = 9.4 hours

    Practice Next
    More Boats and streams Questions

    Relevant for Exams:

    ask-question