Given data:
The given cost of 2 1/2 pound of box is $1.65.
The given expression can be written as,
[tex]\begin{gathered} 2\frac{1}{2}\text{ lb=1.65} \\ 2.5\text{ lb=1.65} \\ 1\text{ lb(}\frac{16\text{ ounce}}{1\text{ lb}})\text{ =0.66} \\ 16\text{ ounces=0.66} \\ \frac{1}{4}\times16\text{ ounces=}\frac{1}{4}\times\text{0.66} \\ 4\text{ ounces=0.165} \end{gathered}[/tex]Thus, the cost of 4 ounces is $0.165.
