Question
City H and City J is 512 km apart. At 08 25, Anna, travelling at a constant speed, left City H for City J. At the same time, David set off from City J for City H at a constant speed which was 6 km/h faster than Anna. Find David's speed if they met at 12 25.
3 m

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City H and City J is 512 km apart. At 08 25, Anna, travelling at a constant speed, left City H for City J. At the same time, David set off from City J for City H at a constant speed which was 6 km/h faster than Anna. Find David's speed if they met at 12 25.