Question
Samantha and Grace started driving from the same villa but in opposite directions along a straight road. After driving for 2 hours, they were 320 km apart. Samantha's average speed was 60 km/h. What was Grace's average speed?
2 m

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Samantha and Grace started driving from the same villa but in opposite directions along a straight road. After driving for 2 hours, they were 320 km apart. Samantha's average speed was 60 km/h. What was Grace's average speed?