I have milk that contains 1 percent fat and milk that contains 4 percent fat. A customer wants a double latte made with 1/3 a pint of 2 percent milk. How much of each type of milk should I use ?
Hello, lilikoipssn!
I have milk that contains 1% fat and milk that contains 4% fat.
A customer wants a double latte made with 1/3 a pint of 2% milk.
How much of each type of milk should I use ?
Let = amount of 1% milk.
. . It contains: . pints of fat.
Then = amount of 4% milk.
. . It contains: . pints of fat.
Hence, the mixture contains a total of: . pints of fat.
But we know that the mixture will be pints which is 2% fat.
. . It contains: . pints of fat.
We just described the final amount of fat in two ways.
. . There is our equation . . .