aw milk from the dairy contains $4\%$ milkfat by mass. A continuous centrifuge is used to separate the milk into two outlet streams: Fraction A with $12\%$ milkfat $($for ice cream, mmmm$)$ and Fraction B with $0\mathrm{.}5\%$ milkfat $($skim milk, hmmmm tastes like milky water$).$ What is the mass flow rate of Fraction B divided by the mass flow rate of Fraction A leaving the unit?