A student has to obtain 45% of the total marks to pass. He got 150 marks and failed by 30 marks. The maximum marks are?	Choose one.
A) 300
B) 250
C) 280
D) 320
E) 400

Rationale: "let the maximum marks be x then , 45 % of x = 150 + 30 45 x / 100 = 180 45 x = 180 * 100 = 18000 x = 400 answer is e"
Answer: E