In an examination, a student scores 4 marks for every correct answer and loses I mark for every wrong answer. If he attempts in all 60 questions and secures 130 marks, the number of questions he attempts correctly, is: Choose the correct choice from the following.
A) 35	B) 38	C) 40	D) 42	E) 52
Explanation:   Let the number of correct answers be X.   Number of incorrect answers = (60 – X).   = 4x – (60 – x) = 130   =&gt; 5x = 190 =&gt; x = 38   Answer: 38
<result>B</result>
In an examination, a student scores 4 marks for every correct answer and loses I mark for every wrong answer. If he attempts in all 60 questions and secures 130 marks, the number of questions he attempts correctly, is: