Question
City P and City Q were 640 km apart. At 9.30 a.m., Parry set off from City P travelling at 70 km/h towards City Q, while Jan set off from City Q travelling towards City P. They met on their way at 1.30 p.m. Find Jan's average speed.
3 m

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City P and City Q were 640 km apart. At 9.30 a.m., Parry set off from City P travelling at 70 km/h towards City Q, while Jan set off from City Q travelling towards City P. They met on their way at 1.30 p.m. Find Jan's average speed.