In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 75 question and secures 125 marks, the number of question he attempted correctly, is –
(1) 35
(2) 40
(3) 42
(4) 46
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In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 75 question and secures 125 marks, the number of question he attempted correctly, is –
(1) 35
(2) 40
(3) 42
(4) 46
In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 75 question and secures 125 marks, the number of question he attempted correctly, is –
(1) 35
(2) 40
(3) 42
(4) 46
Correct option is (2) 40
Let correct = x
Incorrect = y
∴ x + y = 75
4x – y = 125
⇒ x = 40