You did not show any work or ask any questions on your own, so I have NO idea where you're currently at with this exercise or WHY you're stuck. (Please read the post titled, "Read Before Posting". It outlines your responsibilities for seeking help at this site. Nobody can read your mind.)
The broker gets 10% of the money. So, ask yourself, what percent is left over for Ronald?
That percentage of the selling price must be $11,025, in order to break even.
Pick a variable to represent the selling price, write an equation using the above information, and find the break-even price.
The range of selling price is greater than or equal to your equation's solution.
If you need more help with this exercise, then please show whatever work you're able to accomplish (even if you think it's wrong).
If you're totally lost, then be honest, and say so. I will post the steps to solve a similar exercise.