Question
Gillian and Andy started biking at 9.50 a.m. along 12-km trail. Gillian took 30 minutes to reach the finishing point. Andy’s speed was 15 km/h slower than Gillian’s. At what time did Andy reach the finishing point?
3 m

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Gillian and Andy started biking at 9.50 a.m. along 12-km trail. Gillian took 30 minutes to reach the finishing point. Andy’s speed was 15 km/h slower than Gillian’s. At what time did Andy reach the finishing point?