SOLUTION: Find the number of gallons of a 15% acid, 75% acid, and 60% that are required to make 100 gallons of 51% acid. If the sum of three times the number of gallons of a

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Question 1166486: Find the number of gallons of a 15% acid, 75% acid, and 60% that are required to make 100 gallons of 51% acid. If the sum of three times the number of gallons of a 15% acid and a 75% acid is thirty more than the number of gallons of 60% acid?
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
CONCENTRATION%       VOLUME         PURE Acid

   15                 x             0.15x

   60                 j             0.6(3x+3y-30)

   75                 y            0.75y

   51                 100          0.51*100


This part seems unclear: "If the sum of three times the number of gallons of a 15% acid and a 75% acid is thirty more than the number of gallons of 60% acid"



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