You drive in a straight line at 24.0 m/s for 8.0 miles, then at 30.0 m/s for another 8.0 miles. What is the average velocity?

8 miles = 12874.8m

Total distance = 16 miles = 25749.5m

time = distance/velocity

First instance, t = 12874.8/24

= 536.45

Second instance, t = 12874.8/30

= 429.16

Total time = 536.45 + 429.16 = 965.61

Average velocity = Total distance / Total time

= 25749.5/965.61

= 26.67 m/s