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    Question

    The ratio of the boat's speed in still water to the speed

    of the stream is given as 14:3. The boat takes a total time in the ratio 18:12 to travel (d + 90) km upstream and (d - 40) km downstream. Determine the value of d.
    A 250 Correct Answer Incorrect Answer
    B 140 Correct Answer Incorrect Answer
    C 350 Correct Answer Incorrect Answer
    D 300 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ;


    Let speed of boat in still water and speed of stream be ‘14a’ km/h and ‘3a’ km/h respectively.

    Upstream speed = 14a – 3a = 11a km/h

    Downstream speed = 14a + 3a = 17a km/h
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