A student has to obtain 35% of the total marks to pass. He got 100 marks and failed by 40 marks. The maximum marks are?	Choices.
A) 280
B) 400
C) 420
D) 480
E) 520

Rationale: "let the maximum marks be x then , 35 % of x = 100 + 40 35 x / 100 = 140 35 x = 140 * 100 = 14000 x = 400 answer is b"
Answer: B