Răspuns :
A+B+C =180 grade
A/3+B/4+C/5 = A+B+C/3+4+5 =180/12 = 15
A/3 =15 ; A =3*15 =45 gr
B/4 =15 ; B =4*15 =60 gr
C/5 =15 ; C =5*15 =75 gr
A/3+B/4+C/5 = A+B+C/3+4+5 =180/12 = 15
A/3 =15 ; A =3*15 =45 gr
B/4 =15 ; B =4*15 =60 gr
C/5 =15 ; C =5*15 =75 gr