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
