Which is better buy, 3 pounds for $8.31 or 5 pounds for 12.95

3 pounds for $8.31, because the amount is cheaper

To find this answer you would divide the amount of money it cost by the amount you get. doing this will get you the unit price

8.31/3=2.77

12.95/5=2.59

the better buy would be the 5 pounds for 12.95$