It is given in the question that , Each week a cook purchases 12 pounds of butter. During the last year the cook has paid as little as 23.04 and as much as 29.40 for the butter purchased in a week .
And we have to find the difference between the largest and smallest price per pound .
And for that, first we do the subtraction, that is
[tex] =29.40-23.04=$6.36 [/tex]
And this is the price difference for 12 pounds of butter.
Therefore price per pound is
[tex] \frac{6.36}{12} = $0.53 [/tex]
