Răspuns:
Explicație pas cu pas:
mama: m
tata: t
mihai: n
ana: a
m+t+n+a=10
n=2t
a=t+3
m=(a+n)/2=(t+3+2t)/2=(3t+3)/2
m+t+n+a=10
(3t+3)/2+t+2t+t+3=10
[tex]\frac{3}{2}[/tex](t+1)+4t+3=10
[tex]\frac{3}{2}[/tex](t+1)+4t=7
[tex]\frac{3}{2}[/tex]t+[tex]\frac{3}{2}[/tex]+4t=7
[tex]\frac{11}{2}[/tex]t=[tex]\frac{11}{2}[/tex]
t=1 ⇒ n=2t=2*1=2
⇒ a=t+3=1+3=4
⇒ m=(a+n)/2=(2+4)/2=6/2=3
tata: o cutie
mama: 3 cutii
ana: 4 cutii
mihai: 2 cutii