Three teenagers can eat 6 pizzas in half an hour Assuming that their friends eat at the same rate. how many pizzas can 5 teenagers eat in 90 minutes?

If three teenagers can eat 6 pizzas in half an hour, their combined rate is 12 pizzas per hour. Therefore, one teenager eats 4 pizzas per hour. For 5 teenagers, the eating rate would be 20 pizzas per hour. In 90 minutes (or 1.5 hours), 5 teenagers can eat 30 pizzas.