### Home > PC > Chapter 4 > Lesson 4.1.4 > Problem4-60

4-60.
1. Ryan drives 60 miles into the city early in the morning when traffic is light. He averages 60 miles per hour. On the way home he gets caught in commute traffic and only averages 30 miles per hour. Homework Help ✎

1. What was the total distance Ryan traveled on his trip to and from the city?

2. How long did he spend driving?

3. What was his average speed for the combined trip to and from the city?

He went to the city and back.

The time spent going + the time spent returning.

$\text{average speed }=\frac{\text{total distance}}{\text{total time}}$