Question
City C and City D is 675 km apart. At 07 45, Joelle, travelling at a constant speed, left City C for City D. At the same time, Jack set off from City D for City C at a constant speed which was 7 km/h faster than Joelle. Find Jack's speed if they met at 12 45.
3 m

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City C and City D is 675 km apart. At 07 45, Joelle, travelling at a constant speed, left City C for City D. At the same time, Jack set off from City D for City C at a constant speed which was 7 km/h faster than Joelle. Find Jack's speed if they met at 12 45.