Remaining milk – calculation

Hi, Dairy Scientists

You start off with 3.8% butterfat and you skim off to 2% – what is the volume of milk remaining?

Let us say you started off with 1000 liters of milk and your resulting cream has a butterfat of 40%

3.8% – 2% = 1.8% difference per part

1.8% x 1000 liters = 1800 parts of fat to be removed

1800 ÷ 40% = 45 liters of cream

1000 liters – 45 liters = 955 liters of milk remaining.

Don’t ask me why or how – this is the way to do it – agreed?

Semi-convinced,

Leon the Milkman