If the price of a certain computer increased 30 percent from y dollars to 351 dollars, then 2y =
Choose the correct choice:	A) 540	B) 570	C) 619	D) 649	E) 700

Rationale: "before price increase price = y after 30 % price increase price = y + ( 30 / 100 ) * y = 1.3 y = 351 ( given ) i . e . y = 351 / 1.3 = $ 270 i . e . 2 y = 2 * 270 = 540 answer : option a"
Answer: A