Answer is 3 pints remaining
Step by step
Let’s change 3 1/2 quarts to pints
There are 2 pints to 1 quart so multiply 3 1/2 x 2
3 1/2 or 7/2 as a mixed fraction x 2
7/2 x 2/1 = 14/2
Divide 14/2 to simplify = 7 pints
7 pints - 4 pints = 3 pints remaining