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    Question

    The speed of current is 40 km/hr. If the speed of the

    boat in still water had been 10 km/hr more than the original speed then it would take 5.5 hours to cover 341 km in downstream. Find the original speed of the boat in still water (in km/h).
    A 10 Correct Answer Incorrect Answer
    B 15 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the speed of the boat in still water be ‘x’ km/hr According to the question, (x + 10 + 40) = 341/5.5 Or, x = 62 – 50 = 12

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