Question
Ben and Gem left Town N for Town P at the same time. When Ben reached Town P in 4 hours, Gem had only completed 25 of the distance between the two towns. Gem's speed was 30 km/h slower than Ben. What was Ben's speed?
5 m

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Ben and Gem left Town N for Town P at the same time. When Ben reached Town P in 4 hours, Gem had only completed 25 of the distance between the two towns. Gem's speed was 30 km/h slower than Ben. What was Ben's speed?