Question
Harris and Lily started driving from the same flat but in opposite directions along a straight road. After driving for 2 hours, they were 310 km apart. Harris's average speed was 85 km/h. What was Lily's average speed?
2 m

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Harris and Lily started driving from the same flat but in opposite directions along a straight road. After driving for 2 hours, they were 310 km apart. Harris's average speed was 85 km/h. What was Lily's average speed?