Question
Lucas and Risa started driving from the same flat but in opposite directions along a straight road. After driving for 2 hours, they were 360 km apart. Lucas's average speed was 90 km/h. What was Risa's average speed?
2 m

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Lucas and Risa started driving from the same flat but in opposite directions along a straight road. After driving for 2 hours, they were 360 km apart. Lucas's average speed was 90 km/h. What was Risa's average speed?