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Alex777 [14]
4 years ago
14

.5}{1.79} " align="absmiddle" class="latex-formula">
\frac{16}{2.19}
How would I find out the unit rate for these two equations?

Mathematics
1 answer:
san4es73 [151]4 years ago
6 0
Well, we can see this case like this, say let's find out how much is it for just 1oz in each case.

\bf \begin{array}{ccll}
oz&\$\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
10.5&1.79\\
1&x
\end{array}\implies \cfrac{10.5}{1}=\cfrac{1.79}{x}\implies x=\cfrac{1\cdot 1.79}{10.5}\implies x\approx 0.17048
\\\\\\

\begin{array}{ccll}
oz&\$\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
16&2.19\\
1&y
\end{array}\implies \cfrac{16}{1}=\cfrac{2.19}{y}\implies y=\cfrac{1\cdot 2.19}{16}\implies \boxed{y = 0.136875}

so, the one with less $/oz is the better deal, because is less bucks per ounce.
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