Financial Accounting

The Tom Corporation forecasts that total overhead for the current year will be $1,500,000 and that total machine hours will be 12,500 hours. Year to date, the actual overhead is $950,000, and the actual machine hours are 18,000 hours. If Tom Corporation uses a predetermined overhead rate based on machine hours for applying overhead, what is that overhead rate?

I need guidance with this general accounting problem using the right accounting principles.