A grocery chain is planning to construct a state-of-the art distribution facility to serve its seven store locations in the greater Chicago land area. As fresh meat and produce are transported to these store locations several times a day, the site location for the new distribution center is critical for efficient distribution. Given the following map coordinates for the seven store locations, and the number of round trips made by trucks to each of these store locations, use the center-of-gravity method to determine the map coordinates for the new distribution facility: