Final answer:
To determine the proper volume for a 300mg dose of Suprax suspension, a simple proportion based on the concentration (75mg/5ml) is used. Solving this gives a result of 20ml needed for the specified dose. The correct choice is option (3) 20ml.
Step-by-step explanation:
The question involves calculating the volume of medication required based on the concentration of the medication in a suspension. The medication, Suprax suspension, has a concentration of 775mg/5ml. To find out how many milliliters (ml) are needed to get a 300mg dose, we set up a proportion where5mg is to 5ml as 300mg is to x ml.
To solve for x, we use cross-multiplication: 75mg * x ml = 5ml * 300mg. Dividing both sides of the equation by 75mg gives x = (5ml * 300mg)/75mg, which simplifies to x = 20ml. Therefore, to dispense a 300mg dose of Suprax, one needs to provide 20ml of the suspension.