Question
Samantha and Stella started driving from the same house but in opposite directions along a straight road. After driving for 2 hours, they were 340 km apart. Samantha's average speed was 90 km/h. What was Stella's average speed?
2 m

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Samantha and Stella started driving from the same house but in opposite directions along a straight road. After driving for 2 hours, they were 340 km apart. Samantha's average speed was 90 km/h. What was Stella's average speed?