By DPA,
Vienna : The price for oil produced by the Organisation of the Petroleum Exporting Countries (OPEC) increased by another $0.60 Monday, the cartel announced Tuesday.
Rising for the fourth day in a row, one barrel (159 litres) of OPEC-produced crude ended the day at $42.64 Monday.
OPEC calculates its basket price based on 12 brands produced by its members.
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