Final answer:
An inexperienced babysitter earns $7.50 per hour.
Step-by-step explanation:
Let's say the inexperienced babysitter earns x dollars per hour.
According to the question, Mrs. Cullen is willing to pay 25% more for an experienced babysitter. So, if the experienced babysitter earns $10 per hour, the amount Mrs. Cullen is willing to pay for an inexperienced babysitter would be 25% of $10 more than what the experienced babysitter earns.
Therefore, the equation would be:
10 = x + (25% * 10)
10 = x + 2.5
x = 7.5
So, the inexperienced babysitter earns $7.50 per hour.
Learn more about pay difference between experienced and inexperienced babysitters