Question
City Y and City Z is 580 km apart. At 08 50, Gem, travelling at a constant speed, left City Y for City Z. At the same time, Sam set off from City Z for City Y at a constant speed which was 7 km/h faster than Gem. Find Sam's speed if they met at 12 50.
3 m

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City Y and City Z is 580 km apart. At 08 50, Gem, travelling at a constant speed, left City Y for City Z. At the same time, Sam set off from City Z for City Y at a constant speed which was 7 km/h faster than Gem. Find Sam's speed if they met at 12 50.