Total Candy Bars for Goodie Bags

Rachel is planning a birthday party and wants to organize goodie bags for her guests. She prepares 4 bags with the following candy combinations:

• Bag 1: 6 chocolate bars
• Bag 2: 5 chocolate bars
• Bag 3: 7 chocolate bars
• Bag 4: 9 chocolate bars

How many chocolate bars did Rachel use in total for the goodie bags?