Question
Glen and Anna left Town B for Town C at the same time. When Glen reached Town C in 4 hours, Anna had only completed 57 of the distance between the two towns. Anna's speed was 20 km/h slower than Glen. What was Glen's speed?
5 m

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Glen and Anna left Town B for Town C at the same time. When Glen reached Town C in 4 hours, Anna had only completed 57 of the distance between the two towns. Anna's speed was 20 km/h slower than Glen. What was Glen's speed?