2. Holiday Gas Station sells three types of gas: Regular for $3.00 a gallon, Super for $3.20 a gallon, and Premium for $3.30 a gallon. On Black Friday, Holiday sold 6500 gallons of gas for a total of $20,050. Three times as many gallons of Regular as Premium gas were sold. How many gallons of each type of gas were so on Black Friday?

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