The location  convenience store makes personal pan pizzas. Currently, their oven can  produce 50 pizzas per hour. It has a fixed cost of $2000, and a variable  cost of $0.25 per pizza. The owner is considering a bigger oven that  can make 75 pizzas per hour. It has a fixed cost of $3000, but a  variable cost of $.20 per pizza. 
 
 a.) at what quantity do the two ovens have equal cost?
 b.) if the owner expects to sell 9000 pizzas, should he get a new oven?