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Math Help - Mean From a set of numbers

  1. #1
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    Mean From a set of numbers

    I Did this one in first year but i cant do it in college ...

    For the following set of numbers
    57 22 35 x 62

    The mean is calculated to be 52.
    What is the value of x?

    Thanks for any help
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by Ciachyou View Post
    I Did this one in first year but i cant do it in college ...

    For the following set of numbers
    57 22 35 x 62

    The mean is calculated to be 52.
    What is the value of x?

    Thanks for any help
    The mean [average] of the 5 numbers is 52

    Thus, \frac{57+22+35+x+62}{5}=52

    Now solve for x.

    Does this makes sense?

    --Chris
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  3. #3
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    That's what i got but i cant get the "Now solve for x" part.
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  4. #4
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by Ciachyou View Post
    That's what i got but i cant the "Now solve for x." part.
    To solve for x: <br />
\frac{57+22+35+x+62}{5}=52<br />

    Multiply both sides by 5:

    57+22+35+x+62=260

    Then isolate x:

    Note that 57+22+35+62=176

    Thus, x+176=260 \implies \color{red}\boxed{x=84}

    Does this make sense now?

    --Chris
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  5. #5
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    Makes perfect scene to me now, thanks Chris.

    appreciate it : )
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