SOLUTION: In a multiple choice test, two marks are given for each correct answer and one mark is deducted for every incorrect answer. If a pupil answers 20 questions and gets 25 marks, how m
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Question 1017637: In a multiple choice test, two marks are given for each correct answer and one mark is deducted for every incorrect answer. If a pupil answers 20 questions and gets 25 marks, how many correct answers were there
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In a multiple choice test, two marks are given for each correct answer and one mark is deducted for every incorrect answer. If a pupil answers 20 questions and gets 25 marks, how many correct answers were there
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c + w = 20 questions
2c- w = 25 marks
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Add and solve for "c"
3c = 45
c = 15 (# of correct answers)
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Cheers,
Stan H.
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