RIO DE JANEIRO, Oct 20 (Reuters) - Brazilian state-run oil company Petrobras will reduce the average price of gasoline sold to distributors by 4.9% - 0.14 reais ($0.0259) per liter - starting October 21, the company said on Monday. ($1 = 5.4039 reais) (Reporting by Marta Nogueira; Writing by Isabel Teles; Editing by Sarah Morland) (The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)