Question
Tiffany and Sean started biking at 8.40 a.m. along 10-km trail. Tiffany took 30 minutes to reach the finishing point. Sean’s speed was 14 km/h slower than Tiffany’s. At what time did Sean reach the finishing point?
3 m

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Tiffany and Sean started biking at 8.40 a.m. along 10-km trail. Tiffany took 30 minutes to reach the finishing point. Sean’s speed was 14 km/h slower than Tiffany’s. At what time did Sean reach the finishing point?