Question
Riordan and Opal left Town G for Town H at the same time. When Riordan reached Town H in 3 hours, Opal had only completed 35 of the distance between the two towns. Opal's speed was 30 km/h slower than Riordan. What was Riordan's speed?
5 m

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Riordan and Opal left Town G for Town H at the same time. When Riordan reached Town H in 3 hours, Opal had only completed 35 of the distance between the two towns. Opal's speed was 30 km/h slower than Riordan. What was Riordan's speed?