A student has to obtain 40% of the total marks to pass. He got 150 marks and failed by 50 marks. The maximum marks are? Select
A) 500  B) 650  C) 400  D) 575  E) 610

Rationale: "let the maximum marks be x then , 40 % of x = 150 + 50 40 x / 100 = 200 x = 500 answer is a"
Answer: A