Question

A boat traveled 27 miles in 3 hours. At this rate how many mile will the boat travel in 1/2 hour?

Answer 1

`\begin{array}{ccll} miles&hours\\ \cline{1-2} 27 & 3\\ x& (1)/(2) \end{array} \implies \cfrac{27}{x}=\cfrac{3}{~~ (1)/(2)~~}\implies \cfrac{27}{x}=6 \\\\\\ 27=6x\implies \cfrac{27}{6}=x\implies \cfrac{9}{2}=x\implies 4(1)/(2)=x`