Question
Jen left home at 11.30 a.m. and drove towards the suburb. 2 hours later, her mother left their home and drove towards the same suburb at 85 km/h. When the mother reached the suburb at 6.30 p.m., Jen had another 5 km to travel. What was Jen’s average speed? Express your answer in mixed number.
3 m

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Jen left home at 11.30 a.m. and drove towards the suburb. 2 hours later, her mother left their home and drove towards the same suburb at 85 km/h. When the mother reached the suburb at 6.30 p.m., Jen had another 5 km to travel. What was Jen’s average speed? Express your answer in mixed number.