A train travels 81 kilometers in 3 hours, and then 63 kilometers in 4 hours. What is its average speed?
Physics
jabbir1102
Question
A train travels 81 kilometers in 3 hours, and then 63 kilometers in 4 hours. What is its average speed?
1 Answer

1. User Answers zaidmir1987
Avg speed =Total Distance / Total Time Taken
Therefore = Avg speed = 144/7 = 20.57 km/h
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