Multiple Choice Questions on A boat running downstream covers 28 kms in 7 hours while for covering the same distance upstream it ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A boat running downstream covers 28 kms in 7 hours while for covering the same distance upstream it ...........

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    A boat running downstream covers 28 kms in 7 hours, while for covering the same distance upstream it takes 4 hours. What is the speed of the boat in still water and ?

    4km/hr

    Incorrect Answer

    4.5km/hr

    Incorrect Answer

    5km/hr

    Incorrect Answer

    5.5km/hr

    Correct Answer
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    Explanation:

    Downstream=28/7=4km/hr
    Upstream=28/4=7km/hr
    Speed of the boat u=(4+7) /2
    =11/2=5.5km/hr.

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