[tex]\bf \begin{array}{ccll} km s&hrs\\ \cline{1-2} 88&1\\ 500&h \end{array}\implies \cfrac{88}{500}=\cfrac{1}{h}\implies h=\cfrac{500\cdot 1}{88}\implies h=\cfrac{125}{22}\implies 5\frac{15}{22} \\\\\\ \textit{so about 5 hours and 40 minutes and 54 seconds}[/tex]
