A student has to obtain 30% of the total marks to pass. He got 150 marks and failed by 30 marks. The maximum marks are?	Choose one
A) 750 B) 600 C) 650 D) 550 E) 500
Let the maximum marks be x   Then, 30% of x = 150+30   30x/100 = 180   30x= 180*100= 
<gadget id="calculator">180*100</gadget>
<output>18_000</output>
18000   x= 600   Answer is 600
<result>B</result>
A student has to obtain 30% of the total marks to pass. He got 150 marks and failed by 30 marks. The maximum marks are?