令小红原来有m元，小明原来有n元m-m/6+n/3=200n-n/3+m/6=2005m/6+n/3=200，m+n=400n=400-m，5m/6+(400-m)/3=2005m+800-2m=1200，3m=400m=400/3，n=800/3
