Question

Eric drove 275 miles in 5 hours. At the same rate how long would it take him to drive 495 miles?

Answer 1

9 hours.

Step-by-step explanation: divide 275 by 5 and you get 55. So he drove 55 miles every hour. Now divide 495 by 55 and you get 9.

Answer 2

`\bf \begin{array}{ccll} miles&hours\\ \cline{1-2} 275&5\\ 495&x \end{array}\implies \cfrac{275}{495}=\cfrac{5}{x}\implies \cfrac{5}{9}=\cfrac{5}{x} \\\\\\ 5x=45\implies x=\cfrac{45}{5}\implies x=9`