A customer went to a shop and paid a total of $30, out of which $1.28 was for sales tax on taxable purchases. If the tax rate was 8%, then what was the cost of the tax free items?
Options:  A) $9.84  B) $10.68  C) $11.26  D) $12.72  E) $13.54
The total cost was $30.   The tax was $1.28   Let the original price of the taxable items = x   Given that tax rate = 8%   0.08x = 1.28   x = $16   The cost of the tax free items was $30 - $16 - $1.28 = $12.72   The answer is $12.72.30 -  16 -  1.28= 
<gadget id="calculator">30 -  16 -  1.28</gadget>
<output>12.72</output>
$12.72   The answer is $12.72.
<result>D</result>
A customer went to a shop and paid a total of $30, out of which $1.28 was for sales tax on taxable purchases. If the tax rate was 8%, then what was the cost of the tax free items?