Mia's grandmother gives her $220 each month, which she spends on pizzas and burgers. Usually, she buys 4 pizzas for $180 and spends the remaining $40 on 4 burgers. However, the price of 1 pima has increased by $5; the price of a burger has not changed. Now, Mia will buy only 3 pizas permonth. Calculate how many burgers Mia can afford to buy if she still wants to spend all the money. If necessary, round any intermediate calculations to two decimal places, For yout final answer, write the exact value; do not round