Give the step-by-step reasoning process and then the final answer. At Theo's cafe, he makes 3 egg and 4 egg omelettes. His cafe is open from 7:00 a.m. to 11:00 a.m. In the first hour, 5 customers order the 3 egg omelettes. In the second hour, 7 customers order the 4 egg omelettes. In the third hour, 3 customers order the 3 egg omelettes. In the last hour, 8 customers order the 4 egg omelettes. How many eggs does Theo need to make all the omelettes?
In the first and third hour, 5 + 3 = 8 customers order the 3 egg omelettes. In the second and last hour, 7 + 8 = 15 customers order the 4 egg omelettes. To make the 3 egg omelettes, Theo needs 3 x 8 = 24 eggs. To make the 4 egg omelettes, Theo needs 15 x 4 = 60 eggs. To make all the omelettes, he needs 24 + 60 = 84 eggs.
The final answer: 84.