ATQ
total mark = 25 × 4 = 100
he corrected 20 questions ,
for every correct answer he got 4 marks
so 20 × 4 = 80 marks
and for every wrong answers 2 marks will
be deducted,( he answered 5 questions
wrong)
so , 5 × 2 = 10
total mark obtained = 80 + 10 = 90
hence,
total score = 90/100
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