If the price of an article went up by 40%, then by what percent should it be brought down to bring it back to its original price? Choose the correct choice from the following answers:
A) 2/3%  B) 28.57%  C) 2/1%  D) 1/3%  E) 2/7%
Let the price of the article be Rs. 100.   40% of 100 = 40.   New price = 100 + 40 = Rs. 140   Required percentage = (140 - 100)/140 * 100   = 40/140 * 100= 28.57%.   Answer:28.57%
<result>B</result>
If the price of an article went up by 40%, then by what percent should it be brought down to bring it back to its original price?