Răspuns :
Răspuns:
a+b+c=34
a/0,2=b/0,4=c/0,25=k → coeficient de proportionalitate
a=0,2k
b=0,4k
c=0,25k
0,2k+0,4k+0,25k=34
0,85k=34
k=34:0,85=>k=40
a=0,2·40=>a=8
b=0,4·40=>b=16
c=0,25·40=>c=10
Răspuns: a = 8, b = 16, c = 10
Verificare : a + b + c = 8 + 16 + 10 = 24 + 10 = 34 ☑️