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Xyz direct propotionale cu 0.(3) 0.25 0.2
x+y+z=235 REPEDE VA ROG, e pentru verisoara mea...


Răspuns :

{a,b,c}d.p{0.3;0.25,0.(3)=>a/0.3=b/0.25=c/0.(3)=k=>a=3/10k,b=1/4k,c=1/3k
3/10k+1/4k+1/3k=235
Si le calculezi tu!