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A 240 mile drive to your friend's house costs $60 in gas. Your uncle lives 160 miles away. How much would it cost in gas to drive to his house?

Respuesta :

[tex]\begin{array}{ccll} miles&\$\\ \cline{1-2} 240 & 60\\ 160& x \end{array} \implies \cfrac{240}{160}~~=~~\cfrac{60}{x}\implies \cfrac{3}{2}~~=~~\cfrac{60}{x} \\\\\\ 3x=120\implies x=\cfrac{120}{3}\implies x=40[/tex]

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