Răspuns :
I zi = x
II zi = x+2
III zi = x+4
IV zi = x+6
V zi = x+8
VI zi = x+10
x+x+2+x+4+x+6+x+8+x+10 = 48
6x + 30 = 48
6x = 48 -30
6x = 18
x = 18 :6
x = 3
In a IV zi a rezolvat = 3+6 = 9 probleme
II zi = x+2
III zi = x+4
IV zi = x+6
V zi = x+8
VI zi = x+10
x+x+2+x+4+x+6+x+8+x+10 = 48
6x + 30 = 48
6x = 48 -30
6x = 18
x = 18 :6
x = 3
In a IV zi a rezolvat = 3+6 = 9 probleme
prima zi:x
a doua :x+2
a treia :x+4
a patra: x+6
a cincea x+8
a sasea : x+10
x+x+2+x+4+x+6+x+8+x+10=48
6x+30=48
6x=48-30
6x=18
x=3
3+6=9 probleme a patra zi
a doua :x+2
a treia :x+4
a patra: x+6
a cincea x+8
a sasea : x+10
x+x+2+x+4+x+6+x+8+x+10=48
6x+30=48
6x=48-30
6x=18
x=3
3+6=9 probleme a patra zi