Question

Ema,Victor si Daria au folosit pentru un experiment 217 de cuburi de gheata.ema si victor au folosit 158 de cuburi,iar victor si daria au 144 cuburi.Cate cuburi a folosit fiecare copil?

Answer 1

E+V+D=217 cuburi
E+V=158
V+D=144

E=158-V
V=144-D
158-V + 144-D + D = 217
302-V=217
V=302-217
V=85 cuburi are Victor

E=158-85=73 cuburi are Ema

73+85+ D = 217
D=217-73-85= 59 cuburi de gheata are Daria