Question

Use the rate equation d =r ⋅ tto solve the following problem.At 7:15 p.m. Kristen leaves her house and drives at an average speed of 60 miles per hour to her sister's house. She arrives at 9:15 p.m.a. How many hours was the drive to her sister's house? The drive was ? hours.b. How many miles from her sister does Kristen live? Kristen lives ? miles from her sister.

Answer 1

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,

`\begin{gathered} d=rt \\ d=60\text{ }\frac{\text{miles}}{\text{hour}}*2\text{ hours} \\ d=120\text{ miles} \end{gathered}`

Kristen lives 120 miles from her sister.