Please note that you should attempt to work through these problems yourself first, before you look at the solutions. When you have completed the problem and are ready to compare your solution, click on the 'Show solution' link provided.

**Determine percentage values as specified in the problems below:**

a. If a company sells an item for $500, of which $300 is profit, what percentage of the sale is profit

b. If a company sells an item for $2 503, of which $1 211 is profit, what percentage of the sale is profit, rounded to two decimal places?

c. If a student scores a mark of 26 out of 40 on an assignment, and the assignment counts for 25 marks in their final grade, how many marks out of these 25 have they earned? (hint: do this in two stages, first finding a percentage and then using it)