Mathematics · Data Interpretation
Three doctors, Dr. Ben (10 mins), Dr. Kane (15 mins), and Dr. Wayne (25 mins) see patients from 9:00 a.m. to 11:30 a.m. On a slow Thursday, only two patients are waiting at 9:00 a.m. After that, two patients keep arriving at exact 15-minute intervals starting at 9:15 a.m. (i.e., at 9:15 a.m., 9:30 a.m., 9:45 a.m., etc.). What is the total duration in minutes when all three doctors are simultaneously free?
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