Answer: 72 guests total
Step-by-step explanation: Convert quarts to cups to see how many total cups she has...
1 quart = 4 cups
so we find total quarts she cooked and multiply by 4 to find out how many total cups...
8+5+5=18
18x4=72
she made 72 total cups and each guest gets 1 cup
divide total cups by number of cups per guest...
72/1=72