Question

Thorne’s Diner sold a total of 500 small pizzas ($2) and hamburgers ($3) during the July 4th celebration. How many pizzas did the diner sell if total sales were $1,300? Check your answer

Answer 1

they sold 200 pizzas
because you need to make a system of equations:
let x be pizzas
let y be hamburgers
x+y=500
2x+3y=1300
then do elimination
x=200
y=300