Answer:
10 km/h
Explanation:
Before calculating the average speed, we need to convert the time taken for the trip from minutes to hours. Since 1 hour cointains 60 minutes, we have:
[tex]1 h: 60 min = t : 30 min\\t=\frac{1 h \cdot 30 min}{60 min}=0.5 h[/tex]
Karen's average speed is given by:
[tex]v=\frac{d}{t}[/tex]
where
d = 5 km is the distance covered
t = 0.5 h is the time taken for the trip
Substituting into the equation, we find
[tex]v=\frac{5 km}{0.5 h}=10 km/h[/tex]
