A car is making a 12 km trip. It travels the first 6.0 km at 30 km per hour and the last 6.0 km at 60 km per hour. What is the car's average speed for the entire trip?
Answers
Answered by
1
Answer:
40 km/har
Explanation:
distance =6 km
speed =30km/h
time= d/s
=6/30=1/5h
distance =6km
speed=60km
time=6/60=1/10h
total time=1/5+1/10=3/10
average speed =total distance/total time
=12/3/10=12×10/3 =40km/h
Similar questions