Question
Ian and Anna left Town S for Town T at the same time. When Ian reached Town T in 3 hours, Anna had only completed 57 of the distance between the two towns. Anna's speed was 20 km/h slower than Ian. What was Ian's speed?
5 m

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Ian and Anna left Town S for Town T at the same time. When Ian reached Town T in 3 hours, Anna had only completed 57 of the distance between the two towns. Anna's speed was 20 km/h slower than Ian. What was Ian's speed?