Question
City C and City D is 635 km apart. At 08 50, Jade, travelling at a constant speed, left City C for City D. At the same time, Billy set off from City D for City C at a constant speed which was 11 km/h faster than Jade. Find Billy's speed if they met at 13 50.
3 m

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City C and City D is 635 km apart. At 08 50, Jade, travelling at a constant speed, left City C for City D. At the same time, Billy set off from City D for City C at a constant speed which was 11 km/h faster than Jade. Find Billy's speed if they met at 13 50.