there are 40 questions in the test booklet of mathematics olympiad. stephen scores 80 marks when 5 marks are awarded for each correct answer and 3 marks is deducted for each incorrect answer then find the number of correct answer attempted by Stephen.
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Assuming that Stephen attempted all questions...
Let no. of correct answers be c and no. of incorrect answer be n.
So, c + n = 40.
5c - 3n = 80.
=>c = 25 and n = 15.
Let no. of correct answers be c and no. of incorrect answer be n.
So, c + n = 40.
5c - 3n = 80.
=>c = 25 and n = 15.
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