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    Question

    Find the ratio between the speed of the boat and the speed of the stream.

    The speed of the boat while travelling upstream is 24km/hr. The boat can travel P km in Q hours while travelling upstream and 144 km in Q hours while travelling downstream. The number of hours taken by the boat to travel 216km upstream is R hours more than that while travelling the same distance in downstream.

    I. The number of hours taken by the boat to cover (R x R) km distance in downstream is 18 hrs.

    II. P - Q3 + R3 > 102

    A Only i Correct Answer Incorrect Answer
    B Only i and i together Correct Answer Incorrect Answer
    C Only ii Correct Answer Incorrect Answer
    D Either i or iii Correct Answer Incorrect Answer
    E none Correct Answer Incorrect Answer

    Solution

    Given that, v – u = 24 -----(1) (v – u)Q = P-----(2) (v + u)Q = 144-----(3) 216/(v – u) – R = 216/(v +u)---------(4) From the above statement, we cannot ratio between the speed of the boat and the speed of the stream.

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