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

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