Answer:
30 minutes earlier
Explanation:
Since the friend lives 300 miles away, they each have to travel 150 miles which is half of that distance. If the friend travels at 50 miles per hour, they will take 3 hours to reach the destination. If you traveled 60 miles per hour, then you would take 2.5 hours, therefore making it there before him by half an hour.
150/50 = 3
150/60 = 2.5
hope this helps :^)