Question

In an examination, a student scores 4 marks for every correct answer and losses 1 marks for every incorrect answer. If he attempts all 75 question and secure 125 marks, what are the number of question he attempted correctly? With solution.

Answer 1

answer is 40 because
=
$75 \times 4$
=300-125=175
no. of wrong answers
$175 \div | 5$
35 wrong answers
correct answer
75-35=40

Answer 2

the required answer is 40