I believe the answer is B
Step-by-step explanation:
9,600 - 3,600 = 6,000
So, what you’d want to do with that is look at how many gallons 9,600 lbs. of milk makes and subtract that by how many 3,600 lbs. of milk makes and subtract.
800 - 300 = 500
Which leaves you with...
6,000 lbs. of milk makes 500 gallons of ice cream