Lily saved $200. She bought a concert ticket for $120 and a t-shirt for $30. Which operations are used to find the amount of money Lily has left?

1. ### Break Down the Problem

To determine how much money Lily has left after her purchases, we need to identify the initial amount of money she had and the total cost of her purchases.

2. ### Relevant Concepts

We will use basic arithmetic operations:

• Subtraction to find the remaining amount after expenses.

3. ### Analysis and Detail

1. Start with the initial amount of money that Lily has: $\text{Initial Amount} = 200$
2. Calculate the total expenses by adding the cost of the concert ticket and the t-shirt: $\text{Total Expenses} = \text{Ticket Price} + \text{T-shirt Price}$ $\text{Total Expenses} = 120 + 30 = 150$
3. Subtract the total expenses from the initial amount to find the remaining amount: $\text{Remaining Amount} = \text{Initial Amount} - \text{Total Expenses}$ $\text{Remaining Amount} = 200 - 150 = 50$

4. ### Verify and Summarize

We have verified each step of the calculation, ensuring that the initial amount and expenses are correct.

Final Answer

Lily has $50 left after her purchases.