Question
City N and City P is 750 km apart. At 08 20, Mary, travelling at a constant speed, left City N for City P. At the same time, Seth set off from City P for City N at a constant speed which was 7 km/h faster than Mary. Find Seth's speed if they met at 14 20.
3 m

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City N and City P is 750 km apart. At 08 20, Mary, travelling at a constant speed, left City N for City P. At the same time, Seth set off from City P for City N at a constant speed which was 7 km/h faster than Mary. Find Seth's speed if they met at 14 20.