Question

Your total after 4 games of bowling was $28

and after 6 games it was $40. What was the
initial cost to rent the shoes before bowling
any games?

Answer 1

$4

Explanation:

Let x be the cost of a game of bowling and y be the cost to rent the shoes before the game then...

4x+y=28

6x+y=40

We can solve this system using elimination. In this scenario, we can eliminate y by subtracting the two equations...

-2x=-12

Divide both sides by -2

x=6

Plug 6 back in for x to solve for y

4(6)+y=28

24+y=28

Subtract 24 from both sides

y=4

It costs $4 to rent the shoes before bowling