a) The total distance traveled by Alvin was 360 km.
b) His average speed was 75.8 km/h.
What is the relationship between distance and time?
The relationship between distance and time is speed.
Speed means the displacement of an object due to the time that elapses during the change of position.
Speed is computed as distance divided by time.
Data and Calculations:
Total distance traveled = 360 km (180/50%)
Speed for the first 50% km = 80 km/h
Time spent for the first 50% km = 2.25 hours (180/80)
Time spent for the second 50% (180 km) = 2.50 hours
Total time spent = 4.75 hours (2.25 + 2.50)
Average speed for the whole journey = Total distance/Total time
= 75.8 km/h (360/4.75)
Thus, the total distance traveled by Alvin was 360 km with an average speed of 75.8 km/h.
Learn more about the average speed at https://brainly.com/question/18102135
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Question Completion:
Alvin traveled 50% of his journey at a speed of 80 km/h and completed the remaining 180 km in 2½hours.
