Question
Sam drove at an average speed of 84 km/h for 30 minutes. He then reduced his average speed by 9 km/h and drove a further 20 minutes before he reached his house. Find the total distance covered by Sam.
3 m

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Sam drove at an average speed of 84 km/h for 30 minutes. He then reduced his average speed by 9 km/h and drove a further 20 minutes before he reached his house. Find the total distance covered by Sam.