Question
Xandra and Ben started biking at 6.50 a.m. along 12-km trail. Xandra took 30 minutes to reach the finishing point. Ben’s speed was 15 km/h slower than Xandra’s. At what time did Ben reach the finishing point?
3 m

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Xandra and Ben started biking at 6.50 a.m. along 12-km trail. Xandra took 30 minutes to reach the finishing point. Ben’s speed was 15 km/h slower than Xandra’s. At what time did Ben reach the finishing point?