A competative examination of 50 questions, 2marks are awarded for every correct answer and 1 mark is deducted for every incorrect answer. find the total marks if a child has attempted all questions out of which 10 are incorrect.
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If 10 is incorrect then 40 is right ans
So 40 * 2 = 80
-1 * 10 = -10
Total marks 80 -10 = 70
So 40 * 2 = 80
-1 * 10 = -10
Total marks 80 -10 = 70
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