I don t know how to calculate a problem that I accidentally saw

Lost four dollars.

If you can set the purchase price to x, then the price of the goods will be (1+20%)x. Because the price has been reduced by another 20%, the current price is (1-20%) (1+20%)x. Because the current price is 96 yuan, you can get the equation (1-20%) (1+20%) x = 96

The solution is x=100So the loss is 100-96 = 4 yuan.

Hello, I am a secondary school teacher :

Assuming that the original price is x, then the first price is (1+20%)x, and the second price is (1+20%)x(1-20%)x, then the equation is obtained

1+20%)x(1-20%)x=96, the solution gets x=100, and later only sells 96, gets 100-96=4, so choose 2 and lose 4 yuan.

It's a loss of 4 yuan. Let the purchase price be x

x(1+20%)(1-20%)=96

x=100 means that the purchase price is 100 yuan, but in the end it is only sold for 96 yuan, so it loses 4 yuan.

2) Lost 4 yuan.

Set the purchase price to $x.

When it was first priced, it was.

20% reduction: The price reduction is 20% of the list price, not 20% of the purchase price) because of the yuan.

So x = 100 yuan.

In this way, a loss of 4 yuan.

It should be a loss of 4 yuan:

Assuming that the purchase price is 100 yuan, the price is 120 yuan, and the price is reduced by 20%, it is 96 yuan, and the loss is 4 yuan.

Let the original price be $x, then.

x*(1+20%)*80%=96, x=100, the original price was 100 yuan, and now it is only sold for 96, losing 4 yuan.

Intelligence questions, IQ test. How many squares are there?

16 + 9 + 4 + 5 + 5 + 1 = 40 (pcs).

Quiz everyone: This is a math problem that can measure whether a person has business acumen. Master Wang is selling fish, a pound of fish at a price of 45 yuan, now a big sale at a loss, the customer bought a kilogram for 35 yuan, gave Master Wang 100 yuan fake money, Master Wang has no change, so he asked a neighbor for 100 yuan.

Afterwards, the neighbor found out that the money was fake in the process of depositing money, and it was confiscated by the bank, and Master Wang lost 100 yuan to the neighbor, how much did Master Wang lose in total?

Note: The difference between catties and kilograms.

A total loss of 100 + (45 2-35) = 100 + 55 = 155 yuan.

According to the first 2 formulas, the diamond = square; According to the formula, it is found that circle = 3 + square, and it contradicts the 4 formula circle = 5 + diamond = 5 + square, so there is no solution.