Question

In an examination, a student scores 4 marks for every
correct answer and loses 1 mark for every wrong
answer. If he attempts all 75 questions and secures
125 marks, the number of questions he attempted
correctly, is​

Answer 1

Answer:

Explanation:

Let the number of correct answers be x

then numbers of incorrect answers will be 75-x

We get 4x-(75-x)= 125

5x-75=125

5x=200

we get x= 40