Question
Hilda and Owen started driving from the same place towards the clinic at average speeds of 55 km/h and 90 km/h respectively. After some time, they were 90 km apart. How long had they been travelling? Give your answer in mixed number.
2 m

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Hilda and Owen started driving from the same place towards the clinic at average speeds of 55 km/h and 90 km/h respectively. After some time, they were 90 km apart. How long had they been travelling? Give your answer in mixed number.