Question
City M and City N were 664 km apart. At 10.21 a.m., Parry set off from City M travelling at 78 km/h towards City N, while Jan set off from City N travelling towards City M. They met on their way at 2.21 p.m. Find Jan's average speed.
3 m

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City M and City N were 664 km apart. At 10.21 a.m., Parry set off from City M travelling at 78 km/h towards City N, while Jan set off from City N travelling towards City M. They met on their way at 2.21 p.m. Find Jan's average speed.