Question

alice was driving east on a freeway at a constant velocity. she was 480 kilometers west of her exit. in 2 hours, she drove one - third of the way to her exit. what was her velocity? write your answer as a whole number. kilometers per hour to the east

Explanation:

Step1: Calculate the distance she drove

The total distance to the exit is \(d = 480\) kilometers. She drove \(\frac{1}{3}\) of this distance. So the distance \(s\) she drove is \(s=\frac{1}{3}\times480\).

$$s = 160$$

Step2: Calculate the velocity

The formula for velocity \(v\) is \(v=\frac{s}{t}\), where \(t = 2\) hours and \(s=160\) kilometers.

$$v=\frac{160}{2}$$

$$v = 80$$

Answer:

80