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    Question

    The speed of a boat in still water is 8 km/hr, and the

    speed of the current is 3 km/hr. If the boat takes a total of 10 hours to travel β€˜x’ km both upstream and downstream, find the aproximate value of β€˜x’.
    A 68.25 Correct Answer Incorrect Answer
    B 45.25 Correct Answer Incorrect Answer
    C 33.50 Correct Answer Incorrect Answer
    D 34.4 Correct Answer Incorrect Answer

    Solution

    ATQ,


    Downstream speed = 8+3=11 km/hr


    Upstream speed = 8βˆ’3=5 km/hr

    Image

    Taking LCM of 11 and 5,

    Image

    Or 34.4



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