\[\frac{1}{5}\sqrt{75} < \frac{3}{8}\sqrt{48}\]
\[\frac{1}{5}\sqrt{75} = \sqrt{\frac{75}{25}} = \sqrt{3}\]
\[\frac{3}{8}\sqrt{48} = \frac{3}{8}\sqrt{16 \cdot 3} = \frac{3}{8} \cdot 4\sqrt{3} = 1,5\sqrt{3}\]
\[\sqrt{3} < 1,5\sqrt{3}.\]