Final answer:
Sara makes $25,000 working as an administrator per year.
Step-by-step explanation:
To find out how much money Sara makes working as an administrator per year, we can use the fact that her expenses are 60% of her salary. Let's assume her salary is x dollars per year. According to the problem, her expenses are $15,000, which is 60% of her salary:
0.6x = $15,000
Now we can solve for x by dividing both sides of the equation by 0.6:
x = $15,000 / 0.6
x = $25,000
Hence, Sara makes $25,000 working as an administrator per year.