Question
Pierre and Cathy left Town B for Town C at the same time. When Pierre reached Town C in 4 hours, Cathy had only completed 35 of the distance between the two towns. Cathy's speed was 28 km/h slower than Pierre. What was Pierre's speed?
5 m

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Pierre and Cathy left Town B for Town C at the same time. When Pierre reached Town C in 4 hours, Cathy had only completed 35 of the distance between the two towns. Cathy's speed was 28 km/h slower than Pierre. What was Pierre's speed?