Question
Japheth drove a car at an average speed of 72 km/h for 50 minutes. He then reduced his average speed by 9 km/h and drove another 40 min before he reached his destination. Find the total distance covered by Japheth.
3 m

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Japheth drove a car at an average speed of 72 km/h for 50 minutes. He then reduced his average speed by 9 km/h and drove another 40 min before he reached his destination. Find the total distance covered by Japheth.