Question
Liam drove a car at an average speed of 78 km/h for 30 minutes. He then reduced his average speed by 12 km/h and drove another 50 min before he reached his destination. Find the total distance covered by Liam.
3 m

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Liam drove a car at an average speed of 78 km/h for 30 minutes. He then reduced his average speed by 12 km/h and drove another 50 min before he reached his destination. Find the total distance covered by Liam.