Respuesta :

mjdirenzo18
$15 because 1 times 3 is 3 so 5 times 3 would be 15 so $15
texaschic101
5/1 = x/3
cross multiply because this is a proportion
(1)(x) = (5)(3)
x = 15

so 5/1 = 15/3...notice that proportions are nothing but equivalent fractions

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