Pizza Hut, the 68-year-old chain that has long struggled with growing competition and outdated restaurants, will be sold for $2.7 billion by parent company Yum Brands. Yum said Tuesday that the private equity firm LongRange Capital will buy Pizza Hut, excluding the mainland China business, for about $1.5 billion. The mainland China Pizza Hut will be purchased by Yum China Holdings Inc. for approximately $1.2 billion, the company said.