Abus left austin at 6: 00 am and traveled to san antonio. after the passengers got off the bus, it returned to austin , arriving back at the terminal at 10: 30 am. what additional information is needed in order to determine the average speed of the bus?

The distance between cities

Explanation:

V= Distance/ Time

Time of round trip = 28.5 hours

Distance = X unknown

so

Vaverage = 2 x D / 28.5 hours = average speed

see earlier answer

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