### Home > PC3 > Chapter 5 > Lesson 5.1.1 > Problem5-11

5-11.

Driving from Cleveland to Washington, D.C., Ernie averaged $60$ mph for the first $2$ hours, $20$ mph the next hour due to construction, and $65$ mph for the final $3$ hours of his journey.

1. How fast was Ernie going after one hour?

Ernie averaged $60$ mph for the first $2$ hours. Does this mean he drove at a constant rate?

2. What was Ernie’s average rate for his entire $6$-hour trip?

average speed $=$ total distance / total time

Determine Ernie's total distance from the given information.
Then divide by the total time ($6$ hours).