Answer:
48 km/h
Step-by-step explanation:
To find speed we have to use the equation:

Where distance is in km (kilometers) and time is in h (hours)
To solve this all we need to do is plug the values we are given into the correct slots in the equation:

- = 48 km.h
TOP TIP:
When doing a maths question always make sure that the units line up with the information you are given!
Hope this helps, have a lovely day! :)