The half life of a drug in 3 hours. If the drug is administered with a dose of 640mgs and the patient in not allowed to drive untold only 80mgs are present. How long before the patient can drive p
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Answer: 12 hours
Step-by-step explanation: 6 h = 360 min,9 h = 540 min, 12 h = 720 min
640-360=280 , 640-540=100 , 640-720=-80