Helen went to the stationers and bought things worth Euro 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.
A) Euro 15
B) Euro 15.7
C) Euro 19.7
D) Euro 20
E) None
Explanation: Let the amount taxable purchases be Euro x.   Then, 6% of x = 30/100   x = (30/100 x 100/6) = 5.   Euro 19.7ost of tax free items = Euro [25 - (5 + 0.30)= 
<gadget id="calculator">25 - (5 + 0.30)</gadget>
<output>19.7</output>
Euro 19.70   Answer: Option Euro 19.7
<result>C</result>
Helen went to the stationers and bought things worth Euro 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?