Question 281130: This is a weighted average word problem, that i really need the answer to:
whipping cream contains 9% butter fat. 2% milk contains 2% butterfat.
How much whipping cream and 2% milk should be mixed to obtain 35 gallons of milk with 4% butterfat? Answer by Fombitz(13828) (Show Source):
You can put this solution on YOUR website! Let the amount of whipping cream be W and let the amount of 2% milk be T.
1. - Volume equation
2. - Concentration equation
Use eq. 1 to solve for W in terms of T.
Now substitute into eq. 2 and solve for T.
Then from eq. 1,
10 gallons of whipping cream and 25 gallons of 2% milk.