In an examination a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer.a student attempted all the 200 questions and scored in all 200 marks.the number of questions,he answered correctly was
A. 82
B. 80
C. 68
D. 60
Answer: Option B
Solution (By Examveda Team)
Let us assume that he answered X question correctly. Marks scored by him in X question = 4 XWrong answer would be 200 - X
According to question
4X - (200 - X) = 200
or 4X - 200 +X = 200
or 5X = 200 + 200 = 400
or X = 80
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