Answer:
15 km/h
Step-by-step explanation:
Distance traveled in first 3 hours = 50 km
Distance traveled in last one hour = 10 km
Total time taken, t = 3 hours + 1 hour = 4 hours
Total distance traveled = 50 km + 10 km = 60 km
The average speed is defined as the ratio of total distance traveled to the total time taken.
[tex]Average speed = \frac{total distance traveled }{total time taken}[/tex]
[tex]Average speed = \frac{60}{4}[/tex]
Average speed = 15 km/h
Thus, the average speed of the bike riders for the entire trip is 15 km/h.
Answer:
The average speed of the group in 4 hour trip is 15 kilometers per hour.
Step-by-step explanation:
A group of bike riders took a 4.0 hour trip.
The riders cover 50 kilometers in first 3 hours. Write the distance and time in symbols as,
[tex]d_1=50\rm km\\t_1=3\rm hr[/tex]
Then, they cover 10 kilometers in 1 hour. Write the distance and time in symbols as,
[tex]d_2=10\rm km\\t_2=1\rm hr[/tex]
Now, the average speed of the group will be,
[tex]S=\dfrac{\texttt {total diatance travelled}}{\texttt {total time}}\\S=\dfrac{d_1+d_2}{t_1+t_2}\\S=\dfrac{50+10}{3+1}\\S=\dfrac{60}{4}\\S=15\rm km/hr[/tex]
Therefore, the average speed of the group in 4 hour trip is 15 kilometers per hour.
For more details, refer the link:
https://brainly.com/question/9834403?referrer=searchResults
