If x is to 12 as 3 is to 9, then x is equal to

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Solution

The correct option is B 4
Given that x is to 12 as 3 is to 9,
$\frac{x}{12}$ = $\frac{3}{9}$
x $\times$ 9 =3 $\times$ 12
x = $\frac{36}{9}$
x = 4

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