Answer:
500
Explanation:
Add the number of pizzas to find the total, 1020. Since there are 204 thick crusts out of the 1020 pizzas, we can conclude that there is a thick crust in every 5 pizzas. We can make the denominator 2500, making the fraction 500/2500, thus we know there will 500 thick crust pizzas out of the next 2500 pizzas he sells.