Solution:
If Nacir purchases 8 notebooks for $12.48, let the amount Nacir pays for 1 book be represented as y.
This implies that
[tex]\begin{gathered} 8\text{ notebooks }\Rightarrow\$\text{ 12.48} \\ 1\text{ notebook }\Rightarrow\text{ y} \end{gathered}[/tex]
By cross-multiplication, we have
[tex]y\times8\text{ notebooks = \$12.48}\times1\text{ notebook}[/tex]
Divide both sides of the equation by 8 notebooks.
Thus,
[tex]\begin{gathered} \frac{y\times8\text{ notebooks}}{8\text{ notebooks}}\text{ = }\frac{\text{\$12.48}\times1\text{ notebook}}{8\text{ notebooks}} \\ \Rightarrow y=\$1.56 \end{gathered}[/tex]
Hence, Nacir
