A girl walked 12km at 3km/h and cycled 18km at 9km/h. What was her average seed for the whole journey?
Answers
Answered by
2
Answer:
The average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance.
13+18/9+3=31/12=2.5833..... km/hr
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Answered by
4
Answer:
Average speed=Total distance/Total time
Total distance=12 + 18
=30km
Time for 1st part of journey
=12/3 h
=4 h
Time for 2nd part of journey
=18/9 h
=2 h
Total time=4 h + 2 h
=6 h
Average speed=30/6 km/h
=5 km/h
Step-by-step explanation:
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