Răspunsuri

2014-04-26T16:17:01+03:00

x/4=y/5=z/5

a) y=(5x)/4

%*y=x⇒%*5x=4x⇒%=4/5⇒%=80

b)z=(5x)/4⇒5x+20x=324⇒25x=325⇒x=12,96

y=(5x)/4=(5*12,96)/4=64,8/4=16,2

z=y=16,2