1) (a+b+c)/3=92
a+b+c=92•3=276
a/6=b/8=c/9=k
a=6k
b=8k
c=9k
Atunci:
6k+8k+9k=276
23k=276
k=276:23
k=12
Numerele vor fi:
a=6•12=72
b=8•12=96
c=9•12=108
2)ung AOD + ung BOD =180 grade
4•ung BOD+ung BOD=180 grade
5•ungBOD=180
ungBOD=180:5=36 grade
ung AOD= 4•36=144 grade
ungDOM=ungBOD/2=36/2=18 grade
ungAOM=ungAOD+ungDOM=144+18
=162 grade