Given: The cost of 4 cookies is a dollar
To Determine: The cost of 24 dollars
Calculate the cost of 1 cookie
[tex]\begin{gathered} 4N_{\text{COOKIES}}=1\colon N_{\text{COOKIE}}=\text{number of cookies} \\ 1N_{\text{COOKIE}}=\frac{1}{4}=0.25 \end{gathered}[/tex]Calculate the cost of 24 cookies
[tex]\begin{gathered} 24N_{\text{COOKIES}}=24\times\frac{1}{4} \\ 24N_{\text{COOKIES}}=6 \end{gathered}[/tex]Hence, the cost of 24 cookies is $6