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

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