Question

Last week Michael spent $18 to bowl 4 games. This week he spent $27 to bowl 6 games. Michael owns his bowling ball and shoes, so he only has to pay for each game that he bowls. If each of these bowling games costs the same amount of money, what is the constant of proportionality between the money spent and the number of games played?

Answer 1

It costs $4.50 per game.
You just divide 18 by 4. If you want to check your answer divide 27 by 6