[tex]\frac{5+0.8x}{x(x+5)}+\frac{1}{5(x+5)}=\frac{25+4x+x}{5x(x+5)}=\frac{25+5x}{5x(x+5)}=\frac{5(x+5)}{5x(x+5)}= \frac{1}{x}[/tex]

1:0.01=100