Deci fiecare copil are de rezolvat 100 probleme.
In prima zi au rezolvat:
Luca 7
Sara 5
Ana (7+5)/3= 4
A doua zi:
Luca 2x4= 8
Sara 7+5+4= 16
Ana 0
a) Luca 100-(7+8)= 85
b)Sara 50-(5+16)= 29
c) dupa a doua zi Luca are 7+8=15 probleme rezolvate, iar Ana are 4 probleme
Deci 15-4= 11