a boy drive is a scooter at a speed of 40 kilometre per hour for the first 10 kilometre distance and then this then at a speed of 60 kilometre per hour for the next 10 kilometre find the average speed while the average speed of the scooter is not 45 kilometre per hour the mean of the two speeds
Answers
Answered by
2
Answer:
Speed of car in first 15 minutes = 40 km/h
Distance covered = speed × Time taken
60 minutes = 1 hour
15 minutes =
60
15
hour
Distance covered = 240×
60
15
=10km
Speed of car in next 15 minutes = 60 km/h
Distance covered = 60×
60
15
=15km
∴ Total distance covered = (10+15)km = 25 km
∴ 25 km is correct
Similar questions