Question
City N and City P is 585 km apart. At 07 50, Emily, travelling at a constant speed, left City N for City P. At the same time, Billy set off from City P for City N at a constant speed which was 15 km/h faster than Emily. Find Billy's speed if they met at 12 50.
3 m

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City N and City P is 585 km apart. At 07 50, Emily, travelling at a constant speed, left City N for City P. At the same time, Billy set off from City P for City N at a constant speed which was 15 km/h faster than Emily. Find Billy's speed if they met at 12 50.