PROBLEM
Milk that has 5% butter fat is mixed with milk that has 2% butterfat. How much of each is needed to obtain 60 gallons of mild that has 3% butterfat?
X+Y=60 |
Solve the second equation for Y. |
5X+2(-X+60)+180 |
Substitute the second equation for Y into equation one and solve for X. |
(20)+Y=60 |
Substitute the value of X into the revised equation two and solve for Y. |
(20,40) |
Then you get your points |
