in objective test a correct ans score 4 marks and on a wrong ans 2 marks are - - -. a student score 480 marks from 150 question. how many ans were correct?	Choose the correct choice from the following answers:
A) 120
B) 130
C) 110
D) 150
E) 180
<gadget id="calculator">150 * 2</gadget>
<output>300</output>

<gadget id="calculator">480 + 300</gadget>
<output>780</output>

<gadget id="calculator">4 + 2</gadget>
<output>6</output>

<gadget id="calculator">780 / 6</gadget>
<output>130</output>

<result>B</result>
in objective test a correct ans score 4 marks and on a wrong ans 2 marks are - - -. a student score 480 marks from 150 question. how many ans were correct?
divide(add(480, multiply(150, 2)), add(4, 2))
let x be the correct answer and y be the wrong answer so the total number of questions is ( x + y ) = 150 = > 4 x - 2 y = 480 = > 6 x = 780 hence x = 130 answer : b