Question

A restaurant had one type of milk that has 2% fat and another that has 7% fat how many quarts of each types does the restaurant need to make 40 quarts of a milk mixture that is 5% fat

Answer 1

40*5%= 2
0.07x+0.02y=2
x+y=40
7x+2y=200
2x+2y=80
5x=120
x= 24
7x+2y=200
7x+7y= 280
5y=80
y=16
A: 24gallons of 7%milk
16 gallons of 2% milk