 Hello and welcome to the session. In this session, we will discuss the question which says that calculate medication dosage by applying ratio and proportion method. Here, doctor's order says that listed in 5 milligrams per kg PO that is per O's, which means taken by mark. The patient weighs 110 pounds. Medication level says that listed in 100 milligrams per tablet how many tablets would you administer? Now, let us start with the solution of the given question. In this question, we have to calculate medication dosage by applying ratio and proportion method. This problem is a three-step problem. First, here we will calculate patient's weight in kilograms as based on the patient's weight in pounds. Also, it is given that the patient weighs 110 pounds. Now, let X kilograms is equal to 110 pounds. Also, we know that 1 kilogram is equal to 2.2 pounds. Now, from these two relations, we set up an equation as X kilograms is to 110 pounds is equal to 1 kilogram is to 2.2 pounds. Now, here we must note that on both sides of this equation, kilograms first, then pounds. This is very important. It doesn't matter which unit comes first as long as they are in the same order on both sides of the equation. Now, this implies X kilograms upon 110 pounds is equal to 1 kilogram upon 2.2 pounds. Now, by multiplying, we get X kilograms into 2.2 pounds is equal to 1 kilogram into 110 pounds. This implies X is equal to 1 kg into 110 pounds upon 2.2 pounds. Now, this implies X is equal to 1 kilogram upon 2.2 pounds. Now, here on solving, we get 50 kilograms. So, the patient weighs 110 pounds or 50 kilograms. Now, in the next step, we can calculate the dose to be as based on the patient's weight in kilograms. Now, we know that doctors always says that rest of them, 4 milligrams per kilogram it means 4 milligrams for 1 kilogram. So, we have 1 kilogram is equal to 4 milligrams. Now, for patient's weight that is 50 kilograms let the dose to be administered be 1 milligrams that is 50 kilograms is equal to 1 milligrams. Now, from these two relations, again we set up an equation as 1 kilogram is to 4 milligrams is equal to 50 kilograms is to 1 milligrams. Now, again here you can see that on both side of this equation, kilograms comes first than milligrams. Now, this implies 1 kilogram upon 4 milligrams is equal to 1 kilograms upon 1 milligrams. Now, again on cross multiplying, we get 1 milligrams into 1 kilogram is equal to 50 kilograms into 4 milligrams. This implies y is equal to 50 kilograms into 4 milligrams whole upon 1 kilogram which implies y is equal to 50 into 4 milligrams that is 200 milligrams. So, for 50 kilograms the dosage is 200 milligrams. Now, here the application label says rest of them 100 milligrams per tablet. So, in the next step we will calculate that how many tablets should be administered in terms of body weight when each tablet contains 100 milligrams. So, when we are given that 1 tablet is equal to 100 milligrams and we have to calculate that how many tablets will make a dosage of 200 milligrams. Now, let z tablets is equal to 200 milligrams. So, here again the setup and equation as 1 tablet is to 100 milligrams is equal to z tablets is to 200 milligrams. Now, again here you can see in this equation tablets comes first 10 milligrams. Now, this implies 1 tablet upon 100 milligrams is equal to z tablets upon 200 milligrams. Now, on cross multiplying this implies 1 tablet into 200 milligrams is equal to z tablets into 100 milligrams further on solving this implies z is equal to 1 tablet into 200 milligrams hold it on 100 milligrams and on solving this we get z is equal to 2 tablets. So, you should administer 2 tablets to the patient. So, this is the solution of the given question. That's all for this session. Hope you all have enjoyed this session.