Question
regular milk has 4% butterfat. How many litres of regular milk must be mixed with 40 L of milk with 1% butterfat to have milk with 2% butterfat?
Answers
Steve
If x L are added, then
.01(40) + .04x = .02(40+x)
...
.01(40) + .04x = .02(40+x)
...