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. 7800 ?
Choose the correct choice.
A) 11 B) 13 C) 14 D) 18 E) 10
Required difference = [3 ½ % of Rs.7800] – [3 1/3 % of Rs.7800]   = [(7/20-(10/3)]% of Rs.7800 =1/6 % of Rs.7800   = Rs. [(1/6)8(1/100)*7800] = Rs. 13.   Answer is 13.
<result>B</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. 7800 ?