It is given in the question that, a 1-pound bag costs $12.85 and a 4-ounce bag costs $3.55 .
First we need to convert ounce to pounds.
And 1 pounds equals to 16 pounds .
And cost of 4 pounds is $3.55
So cost of 16 pounds is 4*3.55 = $14.20
Therefore Alondra will save by buying one pound bag is
