C = R460.00
Let's start by using algebra to solve for the cost price of the jeans.
Let's call the cost price "C".
We know that John's mark-up percentage as a percentage of cost is 25%, which means that he sold the jeans for 125% of their cost price.
So, we can set up an equation:
125% of C = R575.00
Now we need to convert 125% to a decimal by dividing by 100:
1.25C = R575.00
Finally, we can solve for C by dividing both sides by 1.25:
C = R460.00
Therefore, the cost price of the jeans was R460.00.