3 years ago

An aluminum recycling center pays $0.08 per pound for cans. How much will Mark receive for 21.5 pounds of cans?

1 answer:

3 0

$\bf \begin{array}{ccll}
\$&\stackrel{cans}{lbs}\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
0.08&1\\
x&21.5
\end{array}\implies \cfrac{0.08}{x}=\cfrac{1}{21.5}\implies \cfrac{0.08\cdot 21.5}{1}=x$

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