anonymous
  • anonymous
8.1 is what % of 162
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
can you write the equation?
anonymous
  • anonymous
Sure! :)
anonymous
  • anonymous
well, percent just means 100

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anonymous
  • anonymous
|dw:1332880237199:dw|
anonymous
  • anonymous
5
anonymous
  • anonymous
is allways means = percent means divide by 100 of always means multiply and "what" would be the variable, say x
anonymous
  • anonymous
So would you divide 162 by 8.1?
anonymous
  • anonymous
so 81 is what % of 162 can be written as 81 = x / 100 * 162
anonymous
  • anonymous
almost!!! but percent is 100, not 10
anonymous
  • anonymous
162 by 81?
anonymous
  • anonymous
8100 = x * 16200 8100 = 16200x
anonymous
  • anonymous
huh..?
anonymous
  • anonymous
8100 = x * 16200 8100 = 16200x so 81 = 162x
anonymous
  • anonymous
|dw:1332880683748:dw|
anonymous
  • anonymous
yes, and solve for x
anonymous
  • anonymous
ok, sorry I lost the decimal from the original question I am off by one decimal place here
anonymous
  • anonymous
8.1 is what percent of 162 8.1 = x /100 * 162 810 = x * 16200 810 = 16200x 81 = 1620x
anonymous
  • anonymous
|dw:1332880933825:dwl Then what? :)
anonymous
  • anonymous
opps! mean...
anonymous
  • anonymous
|dw:1332881009846:dw|
anonymous
  • anonymous
\[8.1 = {x \over 100} \times162\]
anonymous
  • anonymous
How do we find x? I'm sorry. I know I should know this but just need a refresher. :)
anonymous
  • anonymous
x=8.1*( 100/162)
anonymous
  • anonymous
division... but you were doing it backwards before, be careful
anonymous
  • anonymous
ok. :)
anonymous
  • anonymous
all of these percent problems become simple arithmatic if you remember how to translate is means = of means multiply percent means divide by 100
anonymous
  • anonymous
Thank you! :)
anonymous
  • anonymous
ace the next test... they should be easier now, I hope
anonymous
  • anonymous
:)

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