Question

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.

Answer 1

Same like question

Anil scored 40 marks in a test, getting 3 marks for each correct answer and losing 7 marks for each wrong answer. Had 5 marks been awarded for each correct answer and 3 marks been deducted for each incorrect answer, then Anil would have scored 60 marks. The number of questions in the test

ANSWER

Let the number of correct answer =x

incorrect answer =y

3x−y=40

5x−3y=60

Solving by elimination method x=15,y=5

⇒ x+y=20