New Click here to Enroll for SIDBI MSME Expert Class by ex-GM, SBI on Nov 24

    Register

    Question

    The ratio of the speed of boat ‘A’ in still water,

    the speed of boat ‘B’ in still water and the speed of the current is 8:6:2, respectively. If the time taken by boat ‘A’ to travel (5D – 45) km downstream is equal to the time taken by boat ‘B’ to travel (D + 80) km upstream, then find the value of ‘D’.
    A 48 Correct Answer Incorrect Answer
    B 88 Correct Answer Incorrect Answer
    C 98 Correct Answer Incorrect Answer
    D 78 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let, the speeds of boat ‘A’ and boat ‘B’, in still water and the speed of the current be 8x km/hr, 6x km/hr and 2x km/hr, respectively. According to the question, (5D – 45)/(8x + 2x) = (D + 80)/(6x – 2x) Or, 20D – 180 = 10D + 800 Or, 10D = 980 Or, D = 98

    Practice Next

    Relevant for Exams: