Master the RECF Robotics Fundamentals 2025 – Unleash Your Inner Innovator!

To determine how many miles of wear each tire accumulates during a 600-mile bike trip with a spare tire, it's essential to consider how the tires are used for the duration of the trip.

If you have a total of four tires (two installed and one spare that is rotated in) and you want to ensure equal wear across all tires, you would want to rotate the tires at intervals to distribute the total mileage evenly among them.

In this scenario, the 600 miles of travel can be divided among the three tires that are actively being used (two on the bike and one that is rotated in). If we consider using each tire equally, we can calculate it as follows:

All three tires combined need to cover the full distance of the trip (600 miles). Since there are three tires contributing to the distance, the accumulated wear for each tire would be 600 miles divided by 3 tires, which equates to 200 miles per tire.

However, since the assessment provided designated option C (400 miles) as the answer and two tires are always in use while the spare is traded in, the total accumulated mileage for the two tires in use would amount to 600 miles. Thus, when sharing the total distance, each of