##### Question 7.5.30

The aspect ratio of a rectangle is the length of its longer side divided by the length of its shorter side. For example, a piece of paper $10\,\mathrm{cm}$ by $15\,\mathrm{cm}$ has an aspect ratio of $15\,\mathrm{cm}\div10\,\mathrm{cm} = 1.5$. Suppose you have a rectangular piece of paper, and you cut part of it off so that you get a square. If the leftover rectangle of paper has the same aspect ratio as the original piece of paper, what is the aspect ratio? Show hint