Answer :
Answer:
90 km/hr
Step-by-step explanation:
The average speed is the total distance / total time
Total distance = 230 + 400 km = 630 km
Total time = 3 hours + 4 hours = 7 hours
Average speed = 630 km / 7 hr = 90 km/hr
Answer:
90 km/hr
Step-by-step explanation:
The average speed is the total distance / total time
Total distance = 230 + 400 km = 630 km
Total time = 3 hours + 4 hours = 7 hours
Average speed = 630 km / 7 hr = 90 km/hr