R+A+C=650
R-195=?
A-218=?
C-162=?
R /_____/...........195/
A /_____/.....................218/
C /_____/.........162/ }650
650-(195+218+162)=650-575=75 (suma ramasa dupa cheltuieli pentru cei 3 copii)
75:3=25 lei (a ramas fiecaruia)
R=25+195=220
A=25+218=243
C=25+162=187
220+234+187=650