Respuesta :

namely, if 3 oz costs $2.40, how much is it for 16 oz?


[tex] \bf \begin{array}{ccll} oz&\$\\ \cline{1-2} 3&2.40\\ 16&x \end{array}\implies \cfrac{3}{16}=\cfrac{2.40}{x}\implies x=\cfrac{16\cdot 2.40}{3}\implies x=12.8 [/tex]