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.

\( Area=length*width \)

\( A=90*7 \)

\( A=630 \)

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.

\( Solution=area* \frac{1}{2} \)

\( S=630* \frac{1}{2} \)

\( S= \frac{630}{2} \)

\( S=315 \)

Answer: 315 fluid ounces

\( 90*7 = 630ft ^{2} \\ \\ 1/2 floz ->1 ft^{2} \\ \\ 630/2=315 \\\\\boxed{315} \)

RELATED: