1) Gathering the data
2-pint carton sour cream = $ 5.06
2-quart carton of sour cream = $ 8.28
2) Let's find firstly, the unit cost for that or better, let's make some equivalences:
1 pint = 1/2 quart
2 pint = 1 quart
1 quart -------$ 5.06
2 quarts -----$8.28
3) If we buy 2 quarts by the first price, we're going to pay $10.12 and if we buy for the 2nd one, we'll end up buying the same quantity for a cheaper price.
So it's better to by 2 quart carton of sour cream for $8.28