Question
Seth and Anna left Town X for Town Y at the same time. When Seth reached Town Y in 4 hours, Anna had only completed 35 of the distance between the two towns. Anna's speed was 20 km/h slower than Seth. What was Seth's speed?
5 m

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Seth and Anna left Town X for Town Y at the same time. When Seth reached Town Y in 4 hours, Anna had only completed 35 of the distance between the two towns. Anna's speed was 20 km/h slower than Seth. What was Seth's speed?