Question

If Karen rode her bicycle 5 km to school in 30 minutes, what was her average speed? Give your answers in km/h.

Answer 1

10 km/h

Step-by-step 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:

`1 h: 60 min = t : 30 min\\t=(1 h \cdot 30 min)/(60 min)=0.5 h`

Karen's average speed is given by:

`v=(d)/(t)`

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

`v=(5 km)/(0.5 h)=10 km/h`