Milk and cream contain different percents of butterfat. How much 3% milk needs to be mixed with how much 15% cream to give 20L of 6% cream? Show all of your work and write out your steps in words.
butter of ingredienats = butter of final product
m= amount of milk
c = amount of cream = 20 - m
.03 m + .15 (20-m) = .06 (20) solve for m, the amount of 3% milk then cream = 20 - m