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

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