Given:
At 7:15 p.m., Kristen leaves her house, and She arrives at 9:15 p.m. at her sister's house.
The average speed is 60 miles per hours
a) from 7:15 to 9:15 there are 2 hours.
It shows that Kristen travels for 2 hours.
The drive was 2 hours.
b) To find the distance,
[tex]\begin{gathered} d=rt \\ d=60\text{ }\frac{\text{miles}}{\text{hour}}\times2\text{ hours} \\ d=120\text{ miles} \end{gathered}[/tex]Kristen lives 120 miles from her sister.
