Final answer:
The patient must pay $100 while the insurance plan must pay $15.
Step-by-step explanation:
To calculate the amount the patient must pay, we subtract the copay from the total charges. In this case, the copay is $15, so the patient must pay $115 - $15 = $100.
The patient needs to pay the amount of $100. The payment is usually made at the time of the visit or within a specified period of time as determined by the healthcare provider.
The insurance plan must pay the remaining amount after the copay. In this case, the insurance plan must pay $115 - $100 = $15.