First, you have to find the price per pound in both offers. 2.5 lbs for $6.75 end up giving you $2.7 per pound. 3 pounds for $7.25 gives you $2.42 per pound, so this offer would be the better and cheaper one. To find the difference per pound,you simply subtract $2.42 from $2.7 for the final difference of $0.28.
