📢 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

    Speed of a Motorboat in still water is 75kmph. If the

    motorboat travels 150 km along the stream in 1 hour 40 minutes, then the time taken by it to cover the same distance against the stream will be?
    A 1 hour 30 minutes Correct Answer Incorrect Answer
    B 2 hour 20 minutes Correct Answer Incorrect Answer
    C 2 hour 30 minutes Correct Answer Incorrect Answer
    D 3 hours Correct Answer Incorrect Answer

    Solution

    Let the speed of the current be x kmph Rate Downstream = (x + 75) kmph According to the question : 150/(x+75) = 1 hour 40 minutes 150/(x+75) = 5/3 hours 450= 5x + 375 5 x = 450 – 375 X= 15 kmph Rate Upstream = 75 – 15 = 60 kmph Required time = 150/60 = 2 hours 30 minutes

    Practice Next
    More Boats and streams Questions

    Relevant for Exams:

    ask-question