Răspuns :
I+r+m=750
I=30+r. M=4r si inlocuim in prima relatie..
30+r+r+4r=750 rezulta 30+6r=750 unde 6r=720 unde r =720/6=120
Irina=120+30=150
Marius=120·4=480
Radu =120..
I=30+r. M=4r si inlocuim in prima relatie..
30+r+r+4r=750 rezulta 30+6r=750 unde 6r=720 unde r =720/6=120
Irina=120+30=150
Marius=120·4=480
Radu =120..
750-30=720 720÷6=120 are radu 120+30=150 are irina 120×4=480 are marius