Answer:
4 medium and 6 large.
Step-by-step explanation:
A possible answer to this is
10 pizzas, 66 slices.
the sum of slices needs to be 66 and canot exceed 10 pizzas in total.
6x4=24 slices
8x6=42 slices
4+6= 10 so it does not exceed 10 pizzas.
24 +42= 66 so there are 66 slices.