If the sales tax reduced from 3 1/2 % to 3 1/3%, then what difference does it make to a person who purchases an article with market price of Rs. 9000 ? Choose the correct answer:
A) 11	B) 13	C) 15	D) 18	E) 10
Required difference = [3 ½ % of Rs.9000] – [3 1/3 % of Rs.9000]   = [(7/20-(10/3)]% of Rs.9000 =1/6 % of Rs.9000   = Rs. [(1/6)8(1/100)*9000] = Rs. 15.   Answer is 15.
<result>C</result>
If the sales tax reduced from 3 1/2 % to 3 1/3%, then what difference does it make to a person who purchases an article with market price of Rs. 9000 ?