Suppose the sales tax be reduced from 3 1/2% to 3 1/3%, then what difference does it make to a person who purchase an article with marked price of Rs. 7200 ?  Choose the correct choice from the following answers:
A) Rs 12 B) Rs 16 C) Rs 10 D) Rs 14 E) None of these
Explanation :   Solution: required difference = (3 1/2% of Rs. 7200) - (3 1/3% of 7200)   = (7/2 - 10/3)% of 7200 = 1/6 % of Rs. 7200   = Rs. ((1/6) * (1/100) *7200) = Rs. 12.   Rs 12nswer : Rs 12
<result>A</result>
Suppose the sales tax be reduced from 3 1/2% to 3 1/3%, then what difference does it make to a person who purchase an article with marked price of Rs. 7200 ?