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Aflati x,y,z stiind ca sunt direct proportionale cu nr 0,1;2supra5;1supra3 si ca Suma lor e 1

Răspuns :

x=0,1k=k/10
y=2k/5
z=k/3
k/10+2k/5+k/3=1
3k+12k+10k/3=30
15k=30
k=2
x=k/10=2/10=0,2
y=2k/5=4/5
z=k/3=2/3