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    Question

    A boat takes 34 hours to travel from P to Q upstream and

    from Q to P downstream. If the speed of the boat in still water is 8.5 km/h and the speed of the current is 4.5 km/h, then P and Find the distance between Q.
    A 52km Correct Answer Incorrect Answer
    B 104km Correct Answer Incorrect Answer
    C 96km Correct Answer Incorrect Answer
    D 24km Correct Answer Incorrect Answer

    Solution

    Let the speed of boat in still water =B and speed of stream =S B=8.5km/h, S=4.5km/h Speed of boat in upstream=B-S=4km/h Speed of boat in downstream=B+S=13km/h Let the distance =x ATQ- x/4 +x/13 =34                  17x=34×52 X=104km.

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