In an objective test, a correct answer scores 4 marks, and a wrong answer scores 2 marks. A student scores 480 marks from 150 questions. how many answers are correct?	Options
A) 90  B) 80  C) 70  D) 60  E) 50
if all ans. right the marks=4*150= 
<gadget id="calculator">4*150</gadget>
<output>600</output>
600   but score=480   wrong attempt marks=600-480= 
<gadget id="calculator">600-480</gadget>
<output>120</output>
120   wrong ans.=120/2= 
<gadget id="calculator">120/2</gadget>
<output>60</output>
60   right ans.=150-60= 
<gadget id="calculator">150-60</gadget>
<output>90</output>
90.   90NSWER:90
<result>A</result>
In an objective test, a correct answer scores 4 marks, and a wrong answer scores 2 marks. A student scores 480 marks from 150 questions. how many answers are correct?