An exam has 25 multiple choice questions. 4 marks are given for every correct answer and 2 negative marks for every wrong answer. What are Mala's total marks if she had 19 correct answers and 6 wrong answers?
 
Ans: 
 
Marks for 19 correct answers \(=\)
 
Marks for 6 wrong answers \(=\)
 
Total Marks \(=\)