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bonufazy [111]
3 years ago
15

Find the percent change from 84 to 63.

Mathematics
2 answers:
REY [17]3 years ago
3 0

Answer:

-25%

20 characters

oksian1 [2.3K]3 years ago
3 0

so the difference is 84 - 63 = 21.

if we take 84 to be the 100%, what is 21 off of it in percentage?

\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 84&100\\ 21&x \end{array}\implies \cfrac{84}{21}=\cfrac{100}{x}\implies 4=\cfrac{100}{x}\implies 4x=100 \\\\\\ x=\cfrac{100}{4}\implies x=25

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