Question 1113041
A student loses a mark for every wrong answer and scores 2 marks for every correct answer. If the answers all the 60 questions in an exam. and secure 39 marks, how many of them were correct.
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c + w = 60 questions
2c-w = 39 marks
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Add and solve for "c":
3c = 99
c = 33 (# of correct answers)
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w = 60-33 = 27 (# of wrong answers)
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Cheers,
Stan H.
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