A customer went to a shop and paid a total of $25, out of which 90 cents was for sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?  Options:
A) $8.50
B) $8.70
C) $9.10
D) $10.00
E) $10.40
The total cost was $25.   The tax was $0.90   Let the original price of the taxable items = x   Given that tax rate = 6%   0.06x = 0.90   x = $15   The cost of the tax free items was $25 - $15 - $0.90 = $9.10   The answer is $9.10.25 -  15 -  0.90= 
<gadget id="calculator">25 -  15 -  0.90</gadget>
<output>9.1</output>
$9.10   The answer is $9.10.
<result>C</result>
A customer went to a shop and paid a total of $25, out of which 90 cents was for sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?