logistics, please answer fast

Centre of Gravity Method 3. Kirill's Custom Carriers is a logistics company who services customers in Southwestern Ontario. Kirill has been approached by a car battery manufacturer to set up a distribution operation somewhere west of Toronto where the parts are manufactured. Beth's Batteries has a good clientele already that are located around the Golden Horseshoe, but true to Pareto's Law, most of their demand comes from four large clients in London, Port Dover, Brampton, and Welland. Those clients are shown in the table below along with the location coordinates that can be plotted on a grid map. The forecasted weekly demand, (or "load") expressed in units, for each city is also given X-Coord. Factories London Port Dover Brampton Welland Demand 13,000 4,000 7,000 8,000 5 40 90 Y-Coord. 90 60 120 20 110 Kirill needs to build or lease a distribution centre to service the clients in these cities. Using the Centre of Gravity Method, what should be the map coordinates of the DC? Plot the four locations on the attached grid map (see page 5). Calculate the optimal location coordinates of the location for the distribution centre and plot it on the grid map as well. Use this space for your calculations, and to show the x and y co-ordinates for the new DC. GRID MAP FOR CENTER-OF-GRAVITY METHOD (use increments of 10 to label the grid map) 150 140 130 *120 110 100 90 80 70 60 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170