Question
Gem left home at 11.15 a.m. and drove towards the province. 2 hours later, her older brother left their home and drove towards the same province at 80 km/h. When the older brother reached the province at 5.15 p.m., Gem had another 2 km to travel. What was Gem’s average speed? Express your answer in mixed number.
3 m

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Gem left home at 11.15 a.m. and drove towards the province. 2 hours later, her older brother left their home and drove towards the same province at 80 km/h. When the older brother reached the province at 5.15 p.m., Gem had another 2 km to travel. What was Gem’s average speed? Express your answer in mixed number.