A candidate got 34% of the votes polled and he lost to his rival by 640 votes. How many votes were cast? Choices:  A) 2000  B) 2400  C) 2800  D) 3200  E) 3600

Rationale: "let x be the total number of votes . 0.34 x + 640 = 0.66 x 0.32 x = 640 x = 640 / 0.32 = 2000 the answer is a ."
Answer: A