A restaurant offers delivery for their pizzas. The total cost is a delivery free added to the price of the pizzas. One costumer pays 25 dollars to have 2 pizzas delivered. Another paid 58 dollars for 5 pizzas. How many pizzas are delivered to the customer who pays 80 dollars
Let x be the price of each pizza and y be the delivery fee.
The total cost of 2 pizzas is 2x+y=25 dollars.
The total cost of 5 pizzas is 5x+y=58 dollars.
To find the number of pizzas delivered for 80 dollars, we can solve the equation 5x+y=80.
Subtracting the equation 5x+y=58 from 5x+y=80, we get 0=22.
This means the equation 5x+y=80 has no solution.
Therefore, no pizzas are delivered for 80 dollars.