SOLUTION: Penter decides to mix grade of gasoline in his truck. He put in 5 gallons of regular and 10 gallons of premium for a total cost of $31.05. If premium gasoline cost $0.18 more per g

Question 1101169: Penter decides to mix grade of gasoline in his truck. He put in 5 gallons of regular and 10 gallons of premium for a total cost of $31.05. If premium gasoline cost $0.18 more per gallon then regular what was the price of each grade of gasoline?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
,

             PRICE   GALLONS  COST(dollars)
REGULAR       p       5       5p
PREMIUM      p+0.18   10     10(p+0.18)
Total                 15      31.05

---------price per gallon for regular
-
------price for premium
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