SOLUTION: rosa combines 2 gallons of 2% milk and 6 gallons of 4% milk. How many gallons of 6% milk must she add to obtain a 5% milk mixture?

Question 951413: rosa combines 2 gallons of 2% milk and 6 gallons of 4% milk. How many gallons of 6% milk must she add to obtain a 5% milk mixture?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
First mixture, , percent. Eight gallons of this.

Use that number unreduced here:

Next mixture, , using v for how much of the 6% fat milk to add.

gallons of the 6% to add.
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