Question

A truck travels 40m/h for 5 hours and then 60m/h for 3 hours in the same direction. What is the average speed of the truck? ​

Answer 1

Answer:

I have an example

Explanation:

Speed of car in first 15 minutes = 40 km/h

Distance covered = speed × Time taken

60 minutes = 1 hour

15 minutes = 6015 hour

Distance covered = 240×6015=10km

Speed of car in next 15 minutes = 60 km/h

Distance covered = 60×6015=15km

∴ Total distance covered = (10+15)km = 25 km

∴ 25 km is correct

# hope it help

Answer 2

Answer:

average speed=total distance / total time taken

1st distance = 40/5=8m

2nd distance = 60/3=20m

average speed=8+20/3+5

=28/8

= 7/2=3.5m/h

hope this helps!