New Click here to Enroll for SIDBI MSME Expert Classes by Experts

    Register

    Question

    Boat ‘A’ can cover 320 km in still water in 16

    hours. In still water, if the ratio of the speed of boat ‘A’ to that of ‘B’ is 5:3 and the speed of stream is 5 km/hr then find the time taken by boat ‘B’ to cover the 306 km in downstream.
    A 10 hours Correct Answer Incorrect Answer
    B 12 hours Correct Answer Incorrect Answer
    C 18 hours Correct Answer Incorrect Answer
    D 15 hours Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Speed of boat ‘A’ in still water = 320/16 = 20 km/hr Speed of boat ‘B’ in still water = 20 × (3/5) = 12 km/hr Downstream speed of boat ‘B’ = 12 + 5 = 17 km/hr Time taken by boat ‘B’ to cover 306 km in downstream = 306/17 = 18 hours

    Practice Next