Answer :
To determine the price per fluid ounce, the first step is to convert the volume of 15.5gallons to fluid ounces.
The unit equivalency is: 1 gallon is equal to 128 fluid ounces
To express 15.5 gallons in fluid ounces you have to multiply them by 128:
[tex]15.5\cdot128=1984[/tex]So, 15.5 gallons is equal to 1984 fluid ounces.
Now you know that the keg, which contains 1984 fluid ounces cost $24, using cross multiplication you can determine how much does one fluid ounce cost:
1984 fluid ounces ______ $24
1 fluid ounce ______ $x
Both relationships are at the same ratio so that:
[tex]\begin{gathered} \frac{24}{1984}=\frac{x}{1} \\ 0.012=x \end{gathered}[/tex]The price per fluid ounce is $0.012