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sleet_krkn [62]
3 years ago
14

a cell phone battery uses 1/3 of its charge in 3/8 of a day. How much charge will it use in one day?​

Mathematics
1 answer:
brilliants [131]3 years ago
3 0

\bf \begin{array}{ccll}charge&day\\\cline{1-2}\frac{1}{3}&\frac{3}{8}\\\\x&1\end{array}\implies \cfrac{~~\frac{1}{3}~~}{x}=\cfrac{~~\frac{3}{8}~~}{1}\implies \cfrac{~~\frac{1}{3}~~}{\frac{x}{1}}=\cfrac{3}{8}\implies \cfrac{1}{3}\cdot \cfrac{1}{x}=\cfrac{3}{8}\\\\\\\cfrac{1}{3x}=\cfrac{3}{8}\implies 8=9x\implies \cfrac{8}{9}=x

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Answer:

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<u>System of Equations</u>

Let's call:

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