Daisy’s milk cow provides 16 cups of milk per day.  75% of the milk is consumed by Daisy’s kids.  Daisy uses 50% of the remaining milk to cook with.  How much milk is left over?
Work out the solution step by step. 
The cow provides 16 cups of milk per day and the kids consume 75% so they drink 16*.75 = 12 cups of milk
The cow provides 16 cups of milk and the kids drink 12 cups leaving 16-12 = 4 cups of milk
Daisy uses 50% of the remaining 4 cups of milk to cook with so she uses .50*4 = 2 cups of milk
She had 4 cups of milk and used 2 cups to cook with so that leaves 4-2 = 2 cups of milk