If hired by Apple can you estimate what portion of your day will involve coding, and what are the other activities you will perform when not coding?
This operational question is seeking to understand how you go about doing your job on a day-to-day basis. Operational questions will ask you about the processes you use to accomplish the tasks required by this position. The best way to answer operational questions is directly and briefly. The Apple interviewer will ask you a follow-up question if they need more information or want to explore the topic in more detail.
"During a normal day, I spend about 60% of my time writing code. The remainder of the day is spent reviewing my work, meeting with my manager, collaborating with other coders on my team, and learning new coding technologies and methodologies."