Final answer:
The exact location of the post office cannot be determined without additional information such as the distances between addresses or a map with coordinates. The question references distances on Eddie's map, but specific numerical values or reference points are needed to solve it.
Step-by-step explanation:
The location of the post office, according to the information given, is 1/4 of the distance from Sergio's place to Saskia's place. To find the location of the post office, we need to calculate this distance. However, the information provided in the question is incomplete as it does not give the actual distance between Sergio's and Saskia's places. Coordinates or a unit of distance measurement is required to solve for the post office's exact location.
To address the question from the reference provided: Assuming that the distance from the post office to City Hall is denoted as 'x' on Eddie's map, then the distance from the post office to the library would be twice this distance (2x), and the distance from the library to the school would be three times the distance from the post office to the City Hall (3x). These relationships allow us to set up ratios or equations if the distances were provided.