Sheila is riding in a multi-day bike trip. Each day she rides a different distance in a different period of time. On the first day Sheila rides 100 miles. On the first part of the first day of the trip, Sheila rode for 6 hours and covered 75 miles.
For the second part of the trip on the first day, Sheila rode for an additional 1.8 hours. Find the average speed for the second part of the trip. Use the relationship d = rt, or distance = rate · time. Round to the nearest tenth.