Question
Kimberly and Ian started biking at 7.40 a.m. along 9-km trail. Kimberly took 30 minutes to reach the finishing point. Ian’s speed was 12 km/h slower than Kimberly’s. At what time did Ian reach the finishing point?
3 m

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Kimberly and Ian started biking at 7.40 a.m. along 9-km trail. Kimberly took 30 minutes to reach the finishing point. Ian’s speed was 12 km/h slower than Kimberly’s. At what time did Ian reach the finishing point?