Which piece of information is not necessary to determine the total amount of registration fees collected by the team?

• A. Meets per season
• B. Registration fee
• C. Number of swimmers
• D. All of the above

Answer: (A)

The main idea is that total registration fees come from multiplying the fee charged per swimmer by the number of swimmers. The number of meets per season doesn’t affect this total if the registration fee is fixed per swimmer and there’s no extra fee per meet. So you only need two things: how many swimmers are registered and what the registration fee per swimmer is. For example, with 25 swimmers at a $40 registration fee, total = 25 × 40 = 1000. The meets-per-season information isn’t required to determine that total.