Final answer:
Managers interact with people inside their work units in their interpersonal roles, while solving problems is part of their decisional roles.
Step-by-step explanation:
Managers interact with people inside their work units in their interpersonal roles. This involves tasks such as communicating, motivating, and building relationships with employees. On the other hand, solving problems is part of their decisional roles. This includes making choices, allocating resources, and resolving conflicts.