Răspuns :
A-mama
B-eu
C-bunica
A+b+c=30
A=1/3x30=1x10=10 oua a vopsit mama
B=a:2=10:2=5 oua am vopsit eu
C=30-10-5=15 oua a vopsit bunica
B-eu
C-bunica
A+b+c=30
A=1/3x30=1x10=10 oua a vopsit mama
B=a:2=10:2=5 oua am vopsit eu
C=30-10-5=15 oua a vopsit bunica