### Home > PC > Chapter 9 > Lesson 9.2.2 > Problem9-88

9-88.

Anne began her commute home by driving at a constant rate of 30 mph for 15 minutes. She then got on the freeway where she drove at a constant rate of 60 mph for 30 minutes. She exited the freeway and immediately had to stop and wait for 15 minutes due to road construction. She then completed her drive home by driving at 30 mph for 15 minutes. Her total commute time was one hour fifteen minutes. What was the distance of Anne’s commute? What was her average speed? Homework Help ✎

Distance traveled:

Average speed:

$\frac{45 \text{ miles}}{1.25 \text{ hours}}=36\text{ mph}$