Question
City D and City E is 724 km apart. At 07 55, Shiyun, travelling at a constant speed, left City D for City E. At the same time, John set off from City E for City D at a constant speed which was 5 km/h faster than Shiyun. Find John's speed if they met at 11 55.
3 m

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City D and City E is 724 km apart. At 07 55, Shiyun, travelling at a constant speed, left City D for City E. At the same time, John set off from City E for City D at a constant speed which was 5 km/h faster than Shiyun. Find John's speed if they met at 11 55.