New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The speed of the stream is 14 km/h. Boat ‘A’ covers

    64 km distance against the stream in 4 hours and boat ‘B’ covers 95 km distance against the stream in 5 hours. The speed of boat ‘B’ in still water is how much percent of the speed of boat ‘A’ in still water?
    A 100% Correct Answer Incorrect Answer
    B 110% Correct Answer Incorrect Answer
    C 120% Correct Answer Incorrect Answer
    D 130% Correct Answer Incorrect Answer

    Solution

    Speed of boat ‘A’ upstream = 64/4 = 16 km/h Speed of boat ‘B’ upstream = 95/5 = 19 km/h Speed of the boat ‘A’ in still water = 16 + 14 = 30 km/h Speed of the boat ‘B’ in still water = 19 + 14 = 33 km/h Required percentage = (33/30) × 100 = 110%

    Practice Next

    Relevant for Exams: