Question
City B and City C is 835 km apart. At 08 50, Diana, travelling at a constant speed, left City B for City C. At the same time, Charlie set off from City C for City B at a constant speed which was 13 km/h faster than Diana. Find Charlie's speed if they met at 13 50.
3 m

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City B and City C is 835 km apart. At 08 50, Diana, travelling at a constant speed, left City B for City C. At the same time, Charlie set off from City C for City B at a constant speed which was 13 km/h faster than Diana. Find Charlie's speed if they met at 13 50.