144ft------------------------------>3s
xft -------------------------------->1s
Using cross-multiplication:
[tex]\begin{gathered} \frac{144}{x}=\frac{3}{1} \\ solve_{\text{ }}for_{\text{ }}x\colon \\ x=\frac{144\cdot1}{3} \\ x=\frac{48ft}{s} \end{gathered}[/tex]Answer:
48ft/s
