Rewrite both fractions so they have a common denominator, 48. You find that $\displaystyle\frac{{15}}{{48}}<\frac{{16}}{{48}}\usepackage{cmbright}\Huge\$ , so $\displaystyle\frac{{5}}{{16}}<\frac{{8}}{{24}}\usepackage{cmbright}\Huge\$ as well.