You are reviewing a claim for Juanita Hernandez, a 45-year-old woman who received a well-check and flu shot from her in-network provider. Her benefits are as follows:

• PPO-medical care office visits
• In-network benefit- co-payment: Office visit $10 and Injections $25
• Out-of-network deductible and coinsurance of 20%

Mrs. Hernandez called the office because she thought she had overpaid during her visit. What was her co-pay on the date of the visit?