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I'm not sure how they got this answer

  1. Apr 27, 2014 #1
    1. The problem statement, all variables and given/known data



    attachment.php?attachmentid=69157&stc=1&d=1398623557.png

    I'm not sure how they arrived at that number, or how they "scaled it."

    Thanks!
     

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    Last edited by a moderator: Apr 27, 2014
  2. jcsd
  3. Apr 27, 2014 #2

    Borek

    User Avatar

    Staff: Mentor

    Do you know what ratio is? And how to use it in calculations?

    4.03128 -> 0.02758
    2.32 -> x

    [tex]\frac {4.03128}{0.02758} = \frac {2.32}{x}[/tex]

    Actually it can be set up in several different, but equivalent ways. In the end they yield exactly the same result.
     
  4. Apr 27, 2014 #3
    Oh, thanks. It must have been a calculator error on my part because I had the same equation set up, only I got 0.0155!!

    Note to self, don't use dollar store calculators :rofl:
     
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