Multiple Choice Questions on Given y is inversely proportional to and x 36 when y 36 What is the value of x when y 54 ........ for CDS Exam Preparation

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Multiple Choice Questions

Given y is inversely proportional to and x 36 when y 36 What is the value of x when y 54 ........

Quantitative Aptitude (CDS) Simplification
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    Given y is inversely proportional to \sqrt{x} and x = 36 when y = 36. What is the value of x when y = 54?

    54

    Incorrect Answer

    27

    Incorrect Answer

    16

    Correct Answer

    8

    Incorrect Answer
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    Explanation:

    y=\frac{k}{\sqrt{x}}
    36=\frac{k}{\sqrt{36}}= \frac{k}{6} => k = 36\times6 = 216
     Now \: \sqrt{x} = \frac{216}{54}=4 =>x=16

     

    By: Munesh Kumari
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