Final answer:
Jillian spends 2/3 of her $15 on snacks which amounts to $10. The rest, which is $15 - $10, equals $5 that she spends on drinks.
Step-by-step explanation:
To calculate how much money Jillian spends on drinks, we need to determine what fraction of her $15 is spent on snacks, and what remains for drinks. Jillian spends 2/3 of her $15 on snacks. First, we find 2/3 of $15:
- 2/3 of $15 = (2/3) × $15 = $10
Then, we subtract the amount spent on snacks from the total amount to find out how much is spent on drinks:
- Total money - Money spent on snacks = Money spent on drinks
- $15 - $10 = $5
Therefore, Jillian spends $5 on drinks.