By DPA,
Vienna : The price for oil produced by the Organisation of the Petroleum Exporting Countries (OPEC) continued to gain at the end of last week, rising to $40.91, the cartel announced Monday.
One barrel (159 litres) of OPEC-produced crude was up $0.60 Friday, compared with the previous day.
The Vienna-based organisation calculates an average price of 12 brands produced by its members.
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