If y is directly proportional to 1/x and x=2 when y=20 ,what is the value of x when y=4? Don’t sapam- Give a relevent an

Question

If y is directly proportional to 1/x and x=2 when y=20 ,what is the value of x when y=4?

Don’t sapam….
Give a relevent ans​

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Remi 1 month 2021-08-18T23:35:32+00:00 1 Answer 0 views 0

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    2021-08-18T23:37:10+00:00

    \sf\underline\red{Given:}

    • y is directly proportional to 1/x and x=2 when y=20
    • And Y=4 in second case

    \sf\underline\orange{To\:find:-}

    • The value of x if y =4

    \sf\underline\blue{Solution:}

    Here,

    \sf\frac{1}{x}=2 when y=20

    And,

    x=? when y=4

    We get to know that This a case of \sf\pink{Direct\: Variation}.

    Therefore,

    A/Q

    \sf\frac{1}{2}\20=\sf\frac{x}{4}

    \frac{1}{2}×20=\sf\frac{x}{4}

    \frac{10}{1}=[tex]\sf\frac{x}{4}[/tex]

    \sf{10×4=x}

    \sf{40=x}

    \sf\fbox\purple{x=40}

    Therefore,the value of \sf\green{x=40} when y=4.

    Hope it’s helpful!

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