anonymous
  • anonymous
easy math!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
anonymous
  • anonymous
@pooja195
anonymous
  • anonymous
@abb0t

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SolomonZelman
  • SolomonZelman
20% of some number is 80.
SolomonZelman
  • SolomonZelman
20% of x is 80.
SolomonZelman
  • SolomonZelman
Normally, when you are given a problem, such as: What is 10% of 100, you do this: \(\color{black}{100\times \dfrac{1}{10}}\)
SolomonZelman
  • SolomonZelman
This time you are given that: \(\color{black}{\color{blue}{x}\times \dfrac{1}{20}=80}\)
SolomonZelman
  • SolomonZelman
Do you understand how I am arriving at this equation?
anonymous
  • anonymous
so the anewer is 1/20?
anonymous
  • anonymous
i can't fin the answer @SolomonZelman
freckles
  • freckles
replace of with times and is with equals and % with times 1/100 \[20 \% \cdot x=80 \\ 20 \cdot \frac{1}{100} \cdot x=80\] solve for x
freckles
  • freckles
reduce 20/100 first
freckles
  • freckles
@ekkerking you there?
anonymous
  • anonymous
its 400 guys the answer
freckles
  • freckles
\[\frac{20}{100}x=80 \\ \frac{1}{5}x=80 \\ x=80 \cdot 5=400\] yep good job

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