Acertain drug dosage calls for 25 mg per kg per day and is divided into two doses (1 every 12 hours). if a person weighs 80 pounds, how much of the drug should be administered each time?

Kg = 2.20462 lb 
kg(2.20462)  = 80 lb
36.2874 kg = 80 lbs
25 mg (36.2874 kg) = 907.185 mg
907.185 / 2 = 453.5925 mg per 12 hours

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