a+b+c=708
b/a=2 rest 2
⇒ b = 2*a+2
c/b = 2 rest 2
⇒ c = 2*b+2
⇒ c = 2*(2a+2) +2
⇒ c= 4a+4+2
⇒ c= 4a+6
aflam ce suma a castigat primul copil
a+2a+2+4a+6=708
7a=708-2-6
7a=700
a=700/7
a=100
aflam ce suma a castigat cel de-al doilea copil
b = 2*a+2
b = 2*100+2
b = 200+2
b = 202
aflam ce suma a castigat cel de-al treilea copil
c = 4a+6
c= 4*100+6
c = 400+6
c = 406
Verificare
100+202+406 = 302+406 = 708