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OpenStudy (anonymous):
What is the percent change from 50 to 40?
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OpenStudy (saifoo.khan):
\[\frac{50-40}{50} \times 100\]Just guessing.
OpenStudy (anonymous):
actual change is 10 \(10\div 50=1\div 5=.2=20\%\) decrease
OpenStudy (anonymous):
80 percent
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