Final answer:
Carlos spent $2.25 on games.
Step-by-step explanation:
To find out how much money Carlos spent on games, we need to multiply the total amount of money he spent by the fraction representing the portion spent on games. In this case, the fraction is $1/4. So, to calculate the amount spent on games, we multiply $9 by 1/4:
$9 × 1/4 = $2.25