Question
Stella and Ethan started driving from the same house but in opposite directions along a straight road. After driving for 3 hours, they were 450 km apart. Stella's average speed was 85 km/h. What was Ethan's average speed?
2 m

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Stella and Ethan started driving from the same house but in opposite directions along a straight road. After driving for 3 hours, they were 450 km apart. Stella's average speed was 85 km/h. What was Ethan's average speed?