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

    Question

    A boat covers a distance of 90 km downstream in 3 hours.

    If the ratio of upstream speed to downstream speed of the boat is 3:9, then find the distance travelled by the boat in upstream in 6 hours.
    A 20 km Correct Answer Incorrect Answer
    B 60 km Correct Answer Incorrect Answer
    C 80 km Correct Answer Incorrect Answer
    D 72 km Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ: Let the upstream and downstream speed of the boat be '3x' km/hr and '9x' km/hr, respectively. ATQ, 9x = (90/3) So, 'x' = 3.33 (approx.) So, upstream speed of the boat = 3x = 3 ├Ч 3.33 = 9.99 km/hr (approx. 10 km/hr) Required distance = 10 ├Ч 6 = 60 km

    Practice Next
    More Boats and streams Questions

    Relevant for Exams:

    ask-question