Don't really understand this question

An examination paper consists of 40 questions 5 marks are given for every correct answer 3 marks are deducted for every wrong answer Kenny answered all of the questions and got x correct and y incorrect His total score for the examination was 56 marks I) Write 2 equations to represent the info above 2)Solve the equation to find out how many kenny answered correctly

Adithi— 10/10/16