Răspuns :
m+t+f=90
t=m+5
m=f+23
t=m+5
t=f+23+5
t=f+28
f+23+f+28+f=90
3f+51=90
3f=90-51
3f=39
f=39:3
f=13 ani
tata=13+28
tata=41
mama=13+23
mama=36
t=m+5
m=f+23
t=m+5
t=f+23+5
t=f+28
f+23+f+28+f=90
3f+51=90
3f=90-51
3f=39
f=39:3
f=13 ani
tata=13+28
tata=41
mama=13+23
mama=36
90-59=39
39:3=13(fiul)
13+28=41(tata)
13+23=36(mama)
V: 13+41+36=90
R:90 ani
39:3=13(fiul)
13+28=41(tata)
13+23=36(mama)
V: 13+41+36=90
R:90 ani