好了=done 好的=Yes

好的 means you agree somebody idea to do something ,for,exameple :A :我们一起去学校。B ：好的； A：明天中午一起吃午饭。B：好的。 好了means you just have done something ,我做好了。 好了other means you hope someone stop to do something . for exameple :somebody speaks all the time , you do not want to hear , you can say :好了，别说了！

Hi, I try to explain for you. 好了 is usually an answer for the question such as Do you finish shower yet? You can't say 好的，but 好了 is a good answer. (you can also say我洗好了)That means when you do something and eventually you finish it, and there's someone asking you if you finish, then you can say 好了. 好的 is a much more usual answer for many questions. For example, someone asks Can you help me fix my bicycle? You can say好的. hmm.. Only if when somebody asks for a help, and you are willing to giving a hand, you could just say 好的. Actually 好的 is the same as OK in Chinese. I hope it could be helpful for u. :)

compare 好 with 好的，好了.————————好-n/adj，好的-adj，好了-perfect tense;

好了means the thing you say have been done . 好的means you are going to do the thing. eg: _Can you help me to do the dishes? _好的，我会去做。（Haven't done.）/ _好了，我做好了。（Have done.） However,there may be differents in different situations. I hope you can understand me....(╥ω╥`)