please help me find x and y

The main post office in Tampa, Florida, is due to be replaced with a much larger, more modern facility that can handle the tremendous flow of mail that has followed the city's growth since 1970 . Since all mail, incoming or outgoing, travels from the seven regional post offices in Tampa through the main post office, its site selection can mean a big difference in overall delivery and movement efficiency. Using the data in the following table, help Postmaster Purushottam Meena calculate the center of gravity location for the proposed new facility. The center of gravity is x= (round your response to two decimal places)