[tex]\bf 1:5\qquad \cfrac{1}{5}\qquad \cfrac{1\cdot \frac{500}{1+5}}{5\cdot \frac{500}{1+5}}\implies \cfrac{1\cdot \frac{250}{3}}{5\cdot \frac{250}{3}}\implies \cfrac{\frac{250}{3}}{\frac{1250}{3}}\implies \cfrac{\quad 83\frac{1}{3}\quad }{416\frac{2}{3}}[/tex]
