Upon arrival at a hospital's emergency room, patients are categorized according to their condition as critical, serious, or stable. In the past year: • 12% of the emergency room patients were critical
• 27% of the emergency room patients were serious
the rest of the emergency room patients were stable

• 43% of the critical patients died
• 26% of the serious patients died and
• 5% of the stable patients died.

Find the probability that the patient who survived was categorized as serious upon arrival.