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Question

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 questions and secures 125 marks, the total number of questions he attempted correctly is

A
35
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B
40
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C
42
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D
46
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Solution

The correct option is B 40
Let total number of correct questions = x
Then, 125=4x+(75x)×(1)
125=4x75+x
200=5x
x=40
Thus, 40 questions are correct.

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