Rahul went to a shop and bought things worth Rs. 27, 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?	Select
A) 19.7
B) 20
C) 22
D) 20.4
E) 21.7
Total cost of the items he purchased = Rs.27   Given that out of this Rs.27, 30 Paise is given as tax   =&gt; Total tax incurred = 30 Paise = Rs.30/100   Let the cost of the tax free items = x   Given that tax rate = 6%   ∴ (27−30/100−x)6/100 = 30/100   ⇒ 6(27 −0.3 −x) = 30   ⇒ (27 − 0.3 − x) = 5   ⇒ x = 27 − 0.3 − 5 = 21.7   21.7
<result>E</result>
Rahul went to a shop and bought things worth Rs. 27, 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?