Question
Lucy and Riordan started biking at 6.50 a.m. along 10-km trail. Lucy took 30 minutes to reach the finishing point. Riordan’s speed was 14 km/h slower than Lucy’s. At what time did Riordan reach the finishing point?
3 m

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Lucy and Riordan started biking at 6.50 a.m. along 10-km trail. Lucy took 30 minutes to reach the finishing point. Riordan’s speed was 14 km/h slower than Lucy’s. At what time did Riordan reach the finishing point?