Ajay walked at an average speed of 8 km per hour for 45 minutes and then walked at an average speed of 12 kilometre per hour for 40 minutes.What was his average speed for the whole journey?
Answers
Ajay walked at an average speed of 8 km per hour for 45 minutes
Speed =8 km/hr
Time = 45 minutes
Distance = Speed * time
He walked at an average speed of 12 kilometre per hour for 40 minutes
Speed = 12 km/hr
Time = 40 minutes
Distance = Speed * time = 8*45/60 = 6
Total distance = 8+6 = 14 km
Total Time = 85/60
Average speed = Distance/Time = 8/85/60 = 5.46km/h
Hence his average speed for the whole journey is 5.64km/h
Answer: 5.64 km/hr
Step-by-step explanation:
Ajay walked at an average speed of 8 km per hour for 45 minutes
Speed =8 km/hr
Time = 45 minutes = 45/60 hr
Distance = Speed * time = 8*45/60 = 6
He walked at an average speed of 12 kilometer per hour for 40 minutes
Speed = 12 km/hr
Time = 40 minutes = 40/60 hr
Distance = Speed * time = 12 *40/60 =8
Total distance = 8+6 = 14 km
Total Time = 45/60 + 40/60 = 85/60
Hence his average speed for the whole journey is 5.64 km/hr