According to the fees listed, what would be the total cost for someone requiring both an initial test and retest?

To determine the total cost for both an initial test and a retest, it is essential to consider the fees associated with each part. Typically, an initial test has a set fee, and if a retest is required, there will be an additional charge. By summing these two fees, you arrive at the total cost.

If the fee for the initial test is $20 and the fee for the retest is $20, then adding these amounts together results in a total of $40. This confirms that the option indicating a total of $40 is accurate based on the provided fee structure.

In this case, understanding how to break down the costs based on the structure given is crucial for calculating the total accurately.