Question
Wendy and Gabriel started biking at 8.40 a.m. along 9-km trail. Wendy took 30 minutes to reach the finishing point. Gabriel’s speed was 12 km/h slower than Wendy’s. At what time did Gabriel reach the finishing point?
3 m

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Wendy and Gabriel started biking at 8.40 a.m. along 9-km trail. Wendy took 30 minutes to reach the finishing point. Gabriel’s speed was 12 km/h slower than Wendy’s. At what time did Gabriel reach the finishing point?