A hallway measuring 90 feet x 7 feet requires 1/2 a fluid ounce of cleaning solution per square foot. How much cleaning solution is required to clean the hallway?

First, find the area of the hallway.[tex]Area=length*width[/tex][tex]A=90*7[/tex][tex]A=630[/tex]Now you know there are 630 square feet to be cleaned. To find the amount of cleaning solution needed, multiply this number by 1/2.[tex]Solution=area* \frac{1}{2} [/tex][tex]S=630* \frac{1}{2} [/tex][tex]S= \frac{630}{2} [/tex][tex]S=315[/tex]Answer: 315 fluid ounces

[tex]90*7 = 630ft ^{2}
\\ \\ 1/2 floz ->1 ft^{2}
\\ \\ 630/2=315
\\\\\boxed{315}[/tex]