Helen went to the stationers and bought things worth Euro 23, 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 option:
A) uro 16.70
B) uro 15.70
C) uro 13.70
D) uro 18.70
E) uro 17.70
E   Euro 17.70   Let the amount taxable purchases be Euro x.   Then, 6% of x = 30/100   x = (30/100 x 100/6) = 5.   Cost of tax free items = uro 17.70uro [  23 - (5 + 0.30)= 
<gadget id="calculator">  23 - (5 + 0.30)</gadget>
<output>17.7</output>
uro 17.70uro 17.70
<result>E</result>
Helen went to the stationers and bought things worth Euro 23, 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?