Question
Zoe left home at 11.40 a.m. and drove towards the city. 3 hours later, her cousin left their home and drove towards the same city at 90 km/h. When the cousin reached the city at 6.40 p.m., Zoe had another 3 km to travel. What was Zoe’s average speed? Express your answer in mixed number.
3 m

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Zoe left home at 11.40 a.m. and drove towards the city. 3 hours later, her cousin left their home and drove towards the same city at 90 km/h. When the cousin reached the city at 6.40 p.m., Zoe had another 3 km to travel. What was Zoe’s average speed? Express your answer in mixed number.