Question

MONEY Deanna and Lise are playing games at the arcade. Deanna started with $15, and the machine she is playing costs $0.75 per game. Lise started with $13, and her machine costs $0.50 per game. After how many games will the two girls have the same amount of money remaining?

Answer 1

Answer:

The answer is: after 8 games

Explanation:

You can solve this problem in two ways:

                                        Deanna                        Lise

Start with                            $15                            $13

After 1 game                      $14.25                       $12.50

After 2 games                   $13.50                       $12.00

After 3 games                   $12.75                        $11.50

After 4 games                   $12.00                        $11.00

After 5 games                   $11.25                         $10.50

After 6 games                   $10.50                        $10.00

After 7 games                    $9.75                         $9.50

After 8 games                   $9.00                        $9.00

Or you can solve this equation:

= (price of arcade D - price of arcade L) / (Deanna's money - Lise's money)

= ($0.75 - $0.50) / ($15 - $13) = $0.25 / $2 = 8