Răspuns:

3x/2 =5y/3=2z/5=k → coeficient de proportionalitate

x=2/3k

y=3/5k

z=5/2k

x+y+z=226

¹⁰⁾2/3k+⁶⁾3/5k+¹⁵⁾5/2k=³⁰⁾226

20k+18k+75k=6780

113k=6780=>k=6780:113=>k=60

x=(2·60)/3=40

y=(3·60)/5=36

z=(5·60)/2=150

Sper ca ti-am fost de folos. Succes!!!