SOLUTION: A solution of 50% pesticide is to be mixed with a solution of 35% pesticide to form 180 liters of a 48% solution. How many liters of the 50% solution must be used?

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Question 826473: A solution of 50% pesticide is to be mixed with a solution of 35% pesticide to form 180 liters of a 48% solution. How many liters of the 50% solution must be used?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Study the lesson in my profile for Mixture - two concentrations - known amount of mixture.

The method uses two equations: One to account for concentration, and the other to account for quantities of materials. Both quantities of material are unknowns.