Sales tax on an item is directly proportional to the cost of the item purchased. If the tax on a $600 item is $42, what is the sales tax on a $930 item?
1.Set the ratio [tex] \frac{600}{42} = \frac{930}{x} [/tex] 2.Cross-multiply [tex]600x = 930(42)[/tex] [tex]600x = 39060[/tex] 3.Divide to single out x [tex]600x \div 600 = 39060 \div 600[/tex] [tex]x = 65.10[/tex]
