Rook Endgames problem 1

Feb 2, 2017, 9:16 PM |

Recenlty in live chess I played this game .I am not so sure that in the endgame i made the corect decision of alllowing him to promote the pawn or not.I need help in the condition when i had two passers and he had the g pawn and his rook was on g8

so please watch this game from move 45 and tell me that was it a draw or winning for white

I am beginner in endgames so i need help