The goergeous gown shop had a no tax added sale of the dresses. GInny was so excited that she bought n dresses at $n each, paying for them with several $20 bills. The change she received back was less than $10. How much change did she receive?
I don't know and I don't care. Stop trying to cheat by posting questions online and handing in other people's answers as your own to get a good mark. That's called plagiarism.