you ride a bike for 2 hours at 25 km/hr then 3 hours at 34 km/hr. what is your average velocity (in km/hr) ?

30.4 km/hr

Explanation:

We are given;

Speed in the first 2 hours as 25 km/hr Speed in the next 3 hours as 34 km/hr

We are required to determine the average velocity in km/hr

To get the average velocity we divide total distance by total time. Thus, we need to determine the total distance

Distance = Speed * time

Distance covered in the first 2 hours;

= 25 km/hr * 2 hours

= 50 km

Distance in the next 3 hours

= 34 km/hr * 3 hours

= 102 km

Therefore, total distance = 50 km + 102 km

= 152 km

Total time = 2 hrs + 3 hrs

= 5 hours

Therefore;

Average speed = 152 km : 5 hours

= 30.4 km/hr

Thus, the average speed is 30.4 km/hr