Question
Yen and Gabby started walking at 5.15 a.m. Yen walked for 30 min while Gabby walked thrice as long as Yen. At what time did Gabby finish her walk?
4 m

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Yen and Gabby started walking at 5.15 a.m. Yen walked for 30 min while Gabby walked thrice as long as Yen. At what time did Gabby finish her walk?