SOLUTION: A farmer needs to mix a 20% spray solution with a 50% spray solution to obtain 45 gallons of a recommended 40% spray solution. How many gallons of each solution should he use?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A farmer needs to mix a 20% spray solution with a 50% spray solution to obtain 45 gallons of a recommended 40% spray solution. How many gallons of each solution should he use?      Log On


   

Question 339648: A farmer needs to mix a 20% spray solution with a 50% spray solution to obtain 45 gallons of a recommended 40% spray solution. How many gallons of each solution should he use?
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
mixture 1 + mixture 2 = total mixture

0.20x + 0.50x = 0.40(2x + 45)
Can you take it from here?