 Hello and welcome to the session. In this session we will discuss a question which says that calculate the number of tablets, tap suits or milliliters needed to administer this given usage where the doctors order says at one tin 200mg. Now let us start with the solution of the given question. In this question we have to calculate the number of tablets, tap suits or milliliters needed to administer this given usage. Here first of all let us see this medication label. From this label we see that medication is administered in milliliters so our answer unit will be in milliliters. Now the doctors order says of one tin 200mg. So we have to find that how many milliliters will it take to make 200mg? So let x milliliters is equal to 200mg. Now we have to convert milliliters to milliliters. For this we have to find conversion factor. For this we see the concentration given on the medication label which is 125mg per 5 milliliters. This means 5 milliliters is equal to 125mg. Now from this equation we get two fractions that is two unit ratios that is 5 milliliters upon 125mg and 125mg upon 5 milliliters. Now here we have to convert milliliters to milliliters. So we choose the first fraction as conversion factor because to convert 200mg into milliliters we have to cancel milliliters. So it should be in the denominator of the fraction and in this fraction you can see that milliliters is in denominator. So conversion factor is 5 milliliters upon 125mg. Now here we have the answer unit, the starting factor that is 200mg and we have conversion factor. So we set up an equation as starting factor into conversion factor is equal to answer unit. This implies 200mg into conversion factor that is 5 milliliters upon 125mg is equal to answer unit that is milliliters. Now milliliters is cancelled with milliliters, 5 into 25 is 125 and 25 into 8 is 200 and this implies 8 into 1 milliliter is equal to 8 milliliters. So you should administer 8 milliliters to the patient. So this is the solution of the given question. That's all for this session. Hope you all have enjoyed the session.