Answered

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The tax on a $70 item is $4.20. Find the tax on a $90 item.

Sagot :

Answer:

$5.40.

Explanation:

Let the tax on the $90=y

Expressing the problem as a ratio gives:

[tex]\frac{90}{70}=\frac{y}{4.20}[/tex]

Solve for y:

[tex]\begin{gathered} y=\frac{90}{70}\times4.20 \\ =5.40 \end{gathered}[/tex]

The tax on a $90 item is $5.40.

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