Ashok scored 65 marks in a test, getting 5 marks each right losing 2. wrong answer. Had 3 marks been awarded for each correct answer and I mark been deducted for each incorrect answer, then Ashok would have scored 40 marks. Formulate the problem algebraically and solve it graphically. many questions were given in the ?
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Answer:20 questions.
He got 15 correct and 5 wrong.
15*5-2*5=65
3*15-1*5=40
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