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ashleykm

how can i find the number of a percent for example 20% of 45

  • 2 years ago
  • 2 years ago

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  1. kumar2006
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    9

    • 2 years ago
  2. ashleykm
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    is 0.9 the same as 9

    • 2 years ago
  3. gandalfwiz
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    Yes

    • 2 years ago
  4. gandalfwiz
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    No, wait, 0.09 is the same

    • 2 years ago
  5. ashleykm
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    i wanna know how you can find it

    • 2 years ago
  6. gandalfwiz
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    "percent" pretty much means "over 100," and 9/100=.09

    • 2 years ago
  7. gandalfwiz
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    You find it wit hproportions

    • 2 years ago
  8. gandalfwiz
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    20/100=x/45

    • 2 years ago
  9. gandalfwiz
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    cross multiply 20*45=100x

    • 2 years ago
  10. gandalfwiz
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    then solve for x 900=100x 9=x

    • 2 years ago
  11. gandalfwiz
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    so 9 is 20% of 45

    • 2 years ago
  12. ashleykm
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    thanks

    • 2 years ago
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