1. **State the problem:** You start with a balance of 60, then deposit 120, and finally withdraw 40. We need to find the final balance. 2. **Formula and explanation:** The final balance is calculated by adding deposits and subtracting withdrawals from the initial balance. 3. **Calculate step-by-step:** - Initial balance: $60$ - After depositing 120: $60 + 120 = 180$ - After withdrawing 40: $180 - 40 = 140$ 4. **Final answer:** The final balance is $140$. This process shows how to update an account balance by adding deposits and subtracting withdrawals in sequence.