what is 3/10 divided by 1/5?
$$\frac{3}{10}\div \frac{1}{5}\\\\ =\frac{3}{10}\times \frac{5}{1}\\\\ =\frac{3}{2}\times \frac{1}{1}\\\\ =\frac{3}{2}\\\\ =1\frac{1}{2}\\\\$$