It is known that the cephalosporin content of each box of medicine is 12x3x4%.
According to the weight of children, 0.0 1g is given once per kilogram of body weight.
Teacher Li's daughter weighs 12kg, so the dosage per time is12x0.05438+0 = 0.12g.
Once every 8 hours, so three times a day, then the daily dose of Miss Li's daughter is 0.12x3 = 0.36g..
Therefore, the administration days are (12x3x4%)/0.36=4 days.
So this box of medicine can make Miss Li's daughter take it for 4 days.
Answer over
Note: I think your title is copied wrong. Children should take 0.0 1g medicine per kilogram of body weight (calculated by cephalosporin content). I calculated it according to 0.01g. Otherwise, children can't take 1.2g medicine every time, more than adults. Please check the title again.