please help class7 maths integers chapter:
In a competitive exam of 40 questions , +2 is rewarded for every correct answer and ‐1 for every wrong answer. find the total score if a student had 12 wrong answers in his attempt of all the questions.
explanation with step by step with statement
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Step-by-step explanation:
student attempt all of the question = 40
wrong answers = 12
Mark deducted for the wrong answers = 12(-1) = -12
correct answers = 40 - 12 = 28
Mark rewarded for the correct answers = 28(2) = 56
Total score = 56 - 12 = 44
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