Answer:
The speed of the commuter train is approximately 69.333 Km/hr
Explanation:
Speed of the train can be calculated using the following rule:
[tex]Speed = \frac{Distance}{Time}[/tex]
Note that the question requires the speed to be calculated in units kn/hour. Therefore, we should ensure proper units used
We are given that:
Distance covered by the train = 52 km
Time taken to cover this distance = 45 minutes which is [tex]\frac{45}{60}=0.75[/tex] hours
Now, we substitute with these givens in the above equation to get the speed of the train
This can be done as follows:
[tex]Speed = \frac{52}{0.75} = 69.333[/tex] Km/hr
Hope this helps :)