Question

    The speed of the boat and the speed of the stream is

    15km/hr and 3km/hr individually. The boat travel for a period of 3 hours upstream and 4 hours downstream, then what will be the distance covered by it?
    A 109km Correct Answer Incorrect Answer
    B 118km Correct Answer Incorrect Answer
    C 108km Correct Answer Incorrect Answer
    D 128km Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, we can say that Let the speed of stream will be = 15 - 3 = 12km/hr  And the speed of Downstream will be = 15 + 3 = 18km/hr hence, the Distance covered by boat will be = (12 x 3) + (18 x 4) =  36 + 72 =  108km

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