Look at the topic clearly-the price of a shoe is 40 yuan-so I lost 40x2+65= 145 yuan. The answer is absolutely correct. There is no dispute. If I doubt again, I will be speechless.

In fact, the problem is that the customer used 100 fake money to exchange a pair of shoes worth 80 yuan and 65 yuan change from Master Wang. This problem has no economic dispute with neighbors, because compensation of 100 yuan is equivalent to exchanging money with neighbors.