Respuesta :

[tex]\bf \begin{array}{ccll} \stackrel{pair}{socks}&\$\\ \cline{1-2} 6&6.75\\ 1&x \end{array}\implies \cfrac{6}{1}=\cfrac{6.75}{x}\implies x=\cfrac{1\cdot 6.75}{6}\implies x=1.125[/tex]

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