Question
Ian and Kathy left Town D for Town E at the same time. When Ian reached Town E in 4 hours, Kathy had only completed 57 of the distance between the two towns. Kathy's speed was 30 km/h slower than Ian. What was Ian's speed?
5 m

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Ian and Kathy left Town D for Town E at the same time. When Ian reached Town E in 4 hours, Kathy had only completed 57 of the distance between the two towns. Kathy's speed was 30 km/h slower than Ian. What was Ian's speed?