设分给乙队x kg2x+x+(x+200)=1200x=250甲500 乙250 丙450
甲乙丙三队分到500\250\450千克?
设甲X,乙Y,丙Z,由题意,可得X+Y+Z=1200X=2YZ-Y=200解,得X=500Y=250Z=450