The average speed is 4 kilometer per hour
Solution:
Average Speed is given by formula:
[tex]\text{ Average speed } = \frac{\text{ total distance }}{\text{ total time }}[/tex]
A student walked 1.5 km in 25 minutes and then, realizing he was late, ran the remaining 0.5 km in 5 minutes
Therefore,
Total distance = 1.5 km + 0.5 km = 2 km
Total time taken = 25 minutes + 5 minutes = 30 minutes
Convert 30 minutes to hour
[tex]1 \text{ minute } = \frac{1}{60} \text{ hour }[/tex]
[tex]30 \text{ minute } = \frac{1}{60} \times 30 \text{ hour } = 0.5hour[/tex]
Substituting the values in above formula,
[tex]\text{ Average speed } = \frac{2}{0.5} = 4 \text{ kilometer per hour }[/tex]
Thus average speed is 4 kilometer per hour
