john takes 10 hours for his trip. for the first five hours his average speed was 40mph. for the next five hours his average speed was 50mph. what was john's average speed during his journey?
Answers
The speed is in meters per hour.
In the first five hours the distance covered is :
5 × 40 = 200 m
In the second 5 hours the distance covered is :
5 × 50 = 250m
Average speed = Total distance / Total time
Total distance = 250 + 200 = 450 m
Total time = 10 hours.
Average speed = 450/10 = 45
= 45 meters per hour
Answer:
John's average speed during his journey is 45 meter per hour.
Explanation:
The distance travelled by John in first five hour is given by,
Distance = speed × time
Distance = 40 mph × 5 hour
Distance = 200 meter
The distance travelled by John in next five hour is given by,
Distance = speed × time
Distance = 50 mph × 5 hour
Distance = 250 meter
Total distance travelled by John is given by,
Total distance = 200 + 250 = 450 meter
Total time taken to travel total distance is given by,
Total time = 10 hour
Average speed is given by,
Average speed =
Average speed =
Average speed =45 meter per hour
John's average speed during his journey is 45 meter per hour.