A man wishes to cover his floor with tiles, each one measuring 3/4
inch by 2 inches. If his room is a rectangle, measuring 12 feet by 18
feet, how many such tiles will he need?
[tex]12\cdot18=216 \ ft^2\leftarrow\hbox{ area of the floor}\\
\frac{3}{4}\cdot2=\frac{3}{2}=1.5 \ ft^2 \leftarrow \hbox{area of a tile}\\\\
\frac{216}{1.5}=144 \Rightarrow A
[/tex]
