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

The answer is: after 8 games

Step-by-step 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