In this third video of the 'Calculating Doses' module, you will learn how to calculate a dose of a drug based on a percentage concentration of a drug in a solution.

The percentage concentration tells you how many grams of the drug are in 100ml of the solution, and you can use this in a similar way to a stock dose in your drug calculation.

Now that you have watched the video, have a go at these practice questions.

Once you have had a go at the questions, if you want to take a look at the methods that we used to get to the answers, the worked solutions are available below.