Respuesta :

[tex]\bf \begin{array}{ccll} \stackrel{clay}{lbs}&\$\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 50&16.50\\ 45&x \end{array}\implies \cfrac{50}{45}=\cfrac{16.50}{x}\implies x=\cfrac{45\cdot 16.50}{50}[/tex]

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