Oil prices jumped in the international market on Tuesday, buoyed up by the steps taken by U.S. Federal Reserve to boost the economy. Brent crude climbed up 5.1%, to $28.41 a barrel. US WTI crude rose 6.6%, to $24.90 barrel. The expected stimulus bolstered the U.S. dollar lower against other currencies. Oil prices and other dollar-denominated commodities will find support from a weaker dollar.