SOLUTION: here were 30 questions in a mathematics competition. all questions must be answered. 5 marks are awarded for every correct answer. 2 marks will be deducted for a wrong answer. if a
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Question 901241: here were 30 questions in a mathematics competition. all questions must be answered. 5 marks are awarded for every correct answer. 2 marks will be deducted for a wrong answer. if amy scores 122 marks, how many questions does she answer correctly? Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! here were 30 questions in a mathematics competition. all questions must be answered. 5 marks are awarded for every correct answer. 2 marks will be deducted for a wrong answer. if amy scores 122 marks, how many questions does she answer correctly?
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let x=number of questions answered correctly
30-x=number of wrong answers
5x-2(30-x)=122
5x-60+2x=122
7x=182
x=26
how many questions does she answer correctly? 26
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