Question

your are traveling down an interstate averaging 50mph how much time has passed when you have traveled 120 miles

Answer 1

$\bf \begin{array}{ccll} miles&hours\\ \cline{1-2} 50&1\\ 120&h \end{array}\implies \cfrac{50}{120}=\cfrac{1}{h}\implies h=\cfrac{120\cdot 1}{50}\implies \stackrel{\textit{2 hours and 24 minutes}}{h=2.4}$