SOLUTION: How many gallons of a 20% solution should be mixed with 15 gallons of a 70% solution to yield a final mixture of lemonade containing 35% of pure lemon juice?

Question 1010743: How many gallons of a 20% solution should be mixed with 15 gallons of a 70% solution to yield a final mixture of lemonade containing 35% of pure lemon juice?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = gallons of 20% solution needed
= gallons of pure lemon juice in 20% solution
gallons of pure lemon juice in 70% solution
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35 gallons of 20% solution are needed
check:

OK
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