设铜牌为x则金牌为2x+3银牌为2x+3-80 x+2x+3+2x+3-80=416 5x=490 x=98
设铜牌为x则金牌为2x+3银牌为2x+3-80 x+2x+3+2x+3-80=416 5x=416-3-3+80(=490) x=98
199枚
