Answer:
60 km/h.
Explanation:
To calculate the average speed of the car, we can use the formula:
Average speed = Total distance / Total time
In this case, the total distance between point A and point B is given as 270 km, and the total time taken to travel this distance is 4 hours and 30 minutes.
To calculate the total time in hours, we need to convert the 30 minutes into hours by dividing it by 60 (since there are 60 minutes in an hour):
30 minutes / 60 = 0.5 hours
Now we can calculate the total time:
Total time = 4 hours + 0.5 hours = 4.5 hours
Using the formula, we can calculate the average speed:
Average speed = 270 km / 4.5 hours
Average speed = 60 km/h