Hi I really hope that someone can help me. I'm a new student in nursing and haven't taken a math class in a long time and have never done dimensional analysis. I was wondering if there is an easy way to understand it and plus the answer to this question. A post-operative patient is to receive 200 mg of intravenous antibiotic every 4 hrs. a 1.00 litre bag of IV solution contains 1000 mg of antibiotic. What drop rate (in seconds) of IV solution is required for the patient to receive the correct dosage of antibiotic? thanks so much for your help.