SOLUTION: Joe's Dairy Farm has 100 gallons of milk that is 4.6% butterfat. How much skim milk (no butterfat) should be mixed with it to make milk that is 3.2% fat? ________gallons of milk s

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Joe's Dairy Farm has 100 gallons of milk that is 4.6% butterfat. How much skim milk (no butterfat) should be mixed with it to make milk that is 3.2% fat? ________gallons of milk s      Log On


   



Question 40866: Joe's Dairy Farm has 100 gallons of milk that is 4.6% butterfat. How much skim milk (no butterfat) should be mixed with it to make milk that is 3.2% fat?
________gallons of milk should be added.
this was answered previously as 43.75 but it when i put it into the computer lesson it said i was wrong. can someone please help me out?
Thanks soooo much!!!!!

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
The setup is like this
100(.046) + x(0) = (100 + x)(.032)
4.6 = 3.2 + .032x
1.4 = .032x
x = 1.4 / .032
x = 43.75 gal of skim milk
That is the correct answer.
Either you typed it in incorrectly or the program has a bug.