Question

SE CONSIDERA PROPORTIA X SUPRA Y = 4 SUPRA 5
DETERMINATI: X+Y SUPRA Y

Answer 1

$\frac{x}{y} = \frac{4}{5} =>5x=4y=>x= \frac{4y}{5}$

$\frac{x+y}{y} = \frac{ \frac{4y}{5}+y }{y} = \frac{9y}{5y} = \frac{9}{5}$