A man walks into a store with just enough money to buy exactly 30 balloons, he then he discovers the store has a buy 1 get, one 1/3 off, sale. (a rather ridiculous sale if I do say so myself) how many balloons can he get?
I don't know for sure if this is the correct way to say the AMC question but I at least have a good idea that it is. What is the answer? this question stumped me, surely one of you knows the proper way to execute the problem.