Question
Hazel and Sean started biking at 8.50 a.m. along 8-km trail. Hazel took 30 minutes to reach the finishing point. Sean’s speed was 10 km/h slower than Hazel’s. At what time did Sean reach the finishing point?
3 m

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Hazel and Sean started biking at 8.50 a.m. along 8-km trail. Hazel took 30 minutes to reach the finishing point. Sean’s speed was 10 km/h slower than Hazel’s. At what time did Sean reach the finishing point?