Respuesta :

sales tax -- 0.05

612 x 0.05 = 30.6
30.6 + 612 = $642.6
You can use the following equation for this:

(( $A/100) x %A) = Ans

$A -  Money Amount

%A - Percent Amount

(($612/100) x 5) = $30.6 in sales tax 
 
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