Lenovo Group Ltd, the world’s leading PC maker, said on Tuesday its third-quarter revenue rose 31 percent to $14.1 billion, beating investor expectations, as its mobile division sales more than doubled following its acquisition of Motorola. The results, released before the Hong Kong Stock Exchange opened Tuesday, sent Lenovo shares 5.7 percent higher in morning trade to HK$10.76, compared with a 0.36 percent fall on the broader Hang Seng index. Lenovo paid $2.91 billion for Motorola, the U.S.