A student has to obtain 50% of the total marks to pass. He got 200 marks and failed by 20 marks. The maximum marks are? Choose the correct choice from the following answers.
A) 510 B) 520 C) 530 D) 540 E) 440
Let the maximum marks be x   Then, 50% of x = 200+20   50x/100 = 220   50x= 220*100= 
<gadget id="calculator">220*100</gadget>
<output>22_000</output>
22000   x= 440   Answer is 440
<result>E</result>
A student has to obtain 50% of the total marks to pass. He got 200 marks and failed by 20 marks. The maximum marks are?