Rahul went to a shop and bought things worth Rs. 25, out of which 30 Paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?
Choose the correct choice from the following answers:  A) Rs 15  B) Rs 12.10  C) Rs 19.70  D) Rs 16.80  E) None of these
Explanation :   Let the cost of the tax items = x   Given that tax rate = 6%   Rs 19.70ost of tax items, x*(6/100) = 30/100   x = 5 rs   Now non taxable item = total cost - cost for taxable item - tax   = 25 - 5 - 0.30= 
<gadget id="calculator">25 - 5 - 0.30</gadget>
<output>19.7</output>
19.70   Answer : Rs 19.70
<result>C</result>
Rahul went to a shop and bought things worth Rs. 25, out of which 30 Paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?