Răspuns :
a-prima zi
b-a2a zi
c-a3a zi
a+b+c=56
a+b=48
c=56-48
c=8
b+c=36
b=36-8
b=28
a=48-28
a=20
b-a2a zi
c-a3a zi
a+b+c=56
a+b=48
c=56-48
c=8
b+c=36
b=36-8
b=28
a=48-28
a=20
A+B+C=56
A+B=48
B+C=36
C=56-48=8
B=36-8=28
A=48-28=20
V:8+28+20=56
A+B=48
B+C=36
C=56-48=8
B=36-8=28
A=48-28=20
V:8+28+20=56