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

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