Question
City C and City D were 660 km apart. At 8.43 a.m., Parry set off from City C travelling at 82 km/h towards City D, while Jan set off from City D travelling towards City C. They met on their way at 12.43 p.m. Find Jan's average speed.
3 m

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City C and City D were 660 km apart. At 8.43 a.m., Parry set off from City C travelling at 82 km/h towards City D, while Jan set off from City D travelling towards City C. They met on their way at 12.43 p.m. Find Jan's average speed.