Question

David has $80 to spend on video games. Used video games cost $10 each, and new video games cost $20 each. Write the equation in standard form that determines the number x of used video games and the number y of new video games he can buy and determine which of the following represents a possible combination of video games.

Answer 1

he could buy 4new games but also buy 8 used games

Answer 2

`10x + 20y = 80`

`x + 2y = 8`

x y

0 4

2 3

4 2

6 1

8 0