Asked by TUHITUHI
                in an examination there are 180 questions , 4 marks is given for each correct answers and 1 marks is subtracted for each wrong answers . if a boy scores 220 marks  find the no of correct and  wrong answers ???
            
            
        Answers
                    Answered by
            Steve
            
    If there are c correct and w wrong answers,
c+w=180
4c-w = 220
c=80
w=100
check: 4*80-100=220
    
c+w=180
4c-w = 220
c=80
w=100
check: 4*80-100=220
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