configuring rates for professional classes and non-professional classes and multiples

I need an option to charge a different rate for different types of classes. For example, I have hour professional classes for girls and hour non-professional for ladies (professional ladies is a longer class). These two hour classes do not cost the same once multiple classes are chosen. The non-professional classes are less expensive and cannot be tghe same pay rate.

Maybe if there was an option to rate each type of class and multiples, it would be easier. Or if there was a system to figure the price of multiple classes combined (professional and non-professional.), it would be a life-saver.

Help!