Multiple Quizzes

Hi, I am using Articulate '13 and have a training module with three quizzes in it. I need to have a cumulative score at the end but cannot figure out how to make that happen. I have read some earlier posts but they don't have enough information to "walk me through it". Can someone please help me with this? Again, I have approximately 30 slides, then a quiz, thirty slides, then a quiz, and the 30 more slides and then a quiz. At the end I need to have a way to total the quizes for a cumulative score that would be a pass/fail.

Thanks in advance!!!!