Question
Mrs Cheong left home at 8 a.m. and drove towards the city. 213 hour later, Mr Cheong left the house and drove at an average speed of 107 km/h towards the city. When Mr Cheong reached his destination at 3 p.m., Mrs Cheong was 16 km away from the city. Find Mrs Cheong’s average speed in km/h. Express your answer in mixed number.
3 m

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Mrs Cheong left home at 8 a.m. and drove towards the city. 213 hour later, Mr Cheong left the house and drove at an average speed of 107 km/h towards the city. When Mr Cheong reached his destination at 3 p.m., Mrs Cheong was 16 km away from the city. Find Mrs Cheong’s average speed in km/h. Express your answer in mixed number.