At a special sale, 12 tickets can be purchased for the price of 3 tickets. If 12 tickets are purchased at the sale, the amount saved will be What percent of the original price of the 12 tickets?
Choose the correct choice from the following:
A) 20 % B) 33.3 % C) 40 % D) 50 % E) 75 %

Rationale: "let the price of a ticket be rs . 100 , so 3 tickets cost 300 & 12 tickets cost 1200 12 tickets purchased at price of 3 tickets ie . , for 300 , so amount saved s rs . 900 , % of 5 tickets = ( 900 / 1200 ) * 100 = 75 % answer : e"
Answer: E