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. 8400 ? Choose the most appropriate option.
A) Rs.10 B) Rs.12 C) Rs.14 D) Rs.16 E) Rs.18
Required difference = [3 ½ % of Rs.8400] – [3 1/3 % of Rs.8400]   = [(7/20-(10/3)]% of Rs.8400 =1/6 % of Rs.8400   = Rs. [(1/6)8(1/100)*8400] = Rs. 14.   Option Rs.14
<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. 8400 ?