Question
Natalie and Oliver started biking at 7.50 a.m. along 8-km trail. Natalie took 30 minutes to reach the finishing point. Oliver’s speed was 10 km/h slower than Natalie’s. At what time did Oliver reach the finishing point?
3 m

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Natalie and Oliver started biking at 7.50 a.m. along 8-km trail. Natalie took 30 minutes to reach the finishing point. Oliver’s speed was 10 km/h slower than Natalie’s. At what time did Oliver reach the finishing point?