Answer:
X = 87.5
Y = 137.5
Step-by-step explanation:
Let's X and Y be the xy-coordinates of the center warehouse.
We know that X is in between the x coordinates or the 2 plants:
50 < X < 150
Similarly Y is in between the y coordinates or the 2 plants:
100 < Y < 200
Using centroid method with the shipping units being weight we can have the following equations
250*50 + 150*150 = X*(250 + 150)
Hence X = (250*50 + 150*150)/(250+150) = 87.5
Similarly 250*100 + 150*200 = Y*(250 + 150)
Hence Y = (250*100 + 150*200)/(250+150) = 137.5