Răspuns:
x,y,z direct proportional cu 0,1 0,2 0,3 => x/0.1=y/0.2=z/0.3=k=> x=0.1k ;y=0.2 k;z=0.3k
3x+2y+5z=110=>0.1k×3+0.2k×2+0.3k×5=110=>
0.3k+0.4k+1.5k=110=>2.2k=110=>k=110:2.2=50
x=0.1k=>x=0.1×50=5
y=0.2k=>y=0.2×50=10
z=0.3k=>z=0.3×50=15
Explicație pas cu pas:
Cu placere!!