A pair of shoes purchased for 45 and sold for 30 correct answer

Ms. Wang sells shoes. The purchase price of a pair of shoes is 45 yuan and the sale price is 30 yuan. The customer came to buy a pair of shoes and gave Zhang 100 yuan. Ms. Wang had no change, so she went to a neighboring shop to exchange for 100 yuan. Later, the neighboring store discovered that the money was fake, and Ms. Wang compensated the neighboring store another 100 yuan. May I ask how much money Ms. Wang lost in one day?

A pair of shoes were purchased for 45 yuan and sold for 30 yuan!

***The loss was 115 yuan, the shoes were gone, the loss was 45 yuan, and the 70 real coins were gone.

The purchase price of a pair of shoes is 45 yuan, the neighbor is compensated 100 yuan, the income is 30 yuan, and the final loss is 115 yuan.