This question is a huge management dilemma for many managers and leaders today. For some time that question perplexed me, because as an entry-level employee I understood it only in a literal sense. As the years have passed and my role has changed to where I am running a company, this question has become more insightful for me. The answer at any time always allows me to focus on what I should do, not what I can do.
The $10/hour and $100/hour amounts are metaphors for the type of jobs you as a leader should be doing. This question should challenge you to look at the tasks and responsibilities you execute each day. In many cases, someone else could handle some of your daily tasks so that your time as a manager or leader is spent on more impactful endeavors.
This should not be construed as condescending to entry-level employees. On the contrary; when leaders delegate the responsibilities to the correct team member, then the business runs more efficiently.