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Second grade math problem? How to calculate? very urgent
The wear and tear of Boss Wang's clothes can be regarded as the cost price of clothes: 18 yuan, and the change was paid to the young man. 79 yuan lost to the young man 79+65,438+08 yuan = 97 yuan.

If the money paid by the young man to Wang is counterfeit, it will be regarded that Wang has not received the money from the young man, that is, 0 yuan.

In order to exchange money, Wang paid the money to the neighborhood twice with counterfeit money and real money, which can be regarded as 0+ 100 yuan = 100 yuan.

Therefore, the total amount paid by the king is: 97+ 100 = 197 yuan.

That is, the king's loss 197 yuan.