Question
Archie and Xylia left Town D for Town E at the same time. When Archie reached Town E in 4 hours, Xylia had only completed 47 of the distance between the two towns. Xylia's speed was 21 km/h slower than Archie. What was Archie's speed?
5 m

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Archie and Xylia left Town D for Town E at the same time. When Archie reached Town E in 4 hours, Xylia had only completed 47 of the distance between the two towns. Xylia's speed was 21 km/h slower than Archie. What was Archie's speed?