Final answer:
The mail distribution room should be located at the centroid of the offices to minimize the total distance traveled by the employees.
Step-by-step explanation:
To minimize the total distance that the people working in these offices have to travel, the mail distribution room should be located at the centroid of the offices. The centroid is the average of the coordinates of the offices, weighted by the number of people working in each office. The coordinates of the centroid can be calculated using the formula:
x-coordinate of centroid = (Σ(xi * wi)) / (Σwi)
y-coordinate of centroid = (Σ(yi * wi)) / (Σwi)
z-coordinate of centroid = (Σ(zi * wi)) / (Σwi)
Using the given values, we can calculate the coordinates of the centroid to be approximately (21.063, 26.625, 2.125).