One restaurant offers two large pizzas for the same price as two medium pizzas and a $6 pitcher of drinks. The medium pizza costs $3 less than the large pizza. How much could a large pizza cost?

Answer 1

Represent the given info algebraically and solve via substitution

Let x = large pizza, y = med pizza

y = x - 3

2x = 2y + 6

2x = 2(x - 3) + 6

2x = 2x - 6 + 6

0 = 0

There are an infinite number of solutions.

A large pizza could be $10 and a medium $7.

2(10) = 2(7) + 6

20 = 20