Ganga scored 85 marks by attempting 39 questions in an examination. If 3 marks were awarded for each answer and 1 mark deducted for each incorrect answer find the number of correct answers.
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3
Answer:
31
Step-by-step explanation:
The maximum number of marks are 39*3 which is 117. To achieve the number of correct marks, we will substract 85 from 117 to get the difference. The difference is 32. Now, we divide the difference by 4 to get the number of wrong answers which is 8. Substract 8 from 39 to find the number of correct answers. The answer is 31.
Checking our answer:
31*3 is 93 and 93-8 is 85.
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