HOUSTON (Reuters) -Oil prices tumbled 3.5% in volatile trade on Tuesday, pressured by weak demand data from China, a gloomy economic outlook and a stronger U.S. dollar.
Brent futures for March delivery fell $3.03 to $82.88 a barrel, by 11:45 a.m. ET (16:45 GMT). U.S. crude fell $2.81 to $77.45 per barrel.
