Question
City C and City D is 830 km apart. At 07 15, Victoria, 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 6 km/h faster than Victoria. Find Billy's speed if they met at 12 15.
3 m

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City C and City D is 830 km apart. At 07 15, Victoria, 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 6 km/h faster than Victoria. Find Billy's speed if they met at 12 15.