Question
Mark drove a car at an average speed of 98 km/h for 30 minutes. He then reduced his average speed by 10 km/h and drove another 15 min before he reached his destination. Find the total distance covered by Mark.
3 m

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Mark drove a car at an average speed of 98 km/h for 30 minutes. He then reduced his average speed by 10 km/h and drove another 15 min before he reached his destination. Find the total distance covered by Mark.