In the second grade math problem, 10 people do 9 people wrong, don t believe it, you do 10

The answer should be $97, and this question can be divided into two processes.

First of all, look at the process of the boss and this young man's transaction, the boss took out 79 yuan, the gift was worth 18 yuan, and the young man took out 100 yuan The boss in this process, for the boss this is a process of only earning and not losing, and the boss earned 3 yuan in the process.

Secondly, look at the transaction between the boss and the neighborhood, the neighbor found that the money was counterfeit, and the boss paid the neighbor 100 yuan, and this 100 yuan was paid by the young man in the first process.

Therefore, the boss only paid 79 yuan and 18 yuan as a gift from the boss, totaling 97 yuan.

A total of 118 yuan was lost, first of all, the cost of Lao Wang's gift of 18 yuan was gone, and Lao Wang didn't get anything (the scrapped banknote was not counted) and returned 100 yuan to the neighborhood, and Lao Wang lost a total of 118 yuan. In short, Lao Wang didn't make any money, lost his gifts, and lost another 100 yuan bill.

The boss and the neighborhood exchanged 100 yuan for change, found 79 yuan for others, and had 21 yuan for the neighborhood in his hand, and later found out that the neighborhood was fake money, so he had to return 100 yuan to the neighborhood, including 21 yuan from the neighborhood, that is, the boss only needed 79 yuan, and the cost of goods was 18 yuan, 79 + 18 = 97 yuan, so the boss lost 97 yuan

97 yuan, counting him first, 18 yuan of capital, and 100 yuan for the neighborhood, a total of 118 yuan.

Then he looked in, that is, he was looking for the young man to pay 21 yuan more (because he only found 79 yuan for him).

This is 118-21=97

After a few days of ideological struggle, I found out that it was 97 yuan.

The reason is: the boss took 100 yuan to exchange the fake for the real one, and sold the goods himself, but he actually earned 3 yuan.

Later, the boss also gave 100 yuan true, that is, 100 yuan lost and 3 yuan earned.

97 yuan, I admire the 97 one I said earlier, it's really amazing.

As for other answers, go back and think about it It doesn't matter whether the money is real or not, he always makes money when he sells the goods.

3 yuan, because 100 yuan was taken from the youth, and the exchange was also exchanged on others.

I have never paid for it, and I will use it in the end.

Will it be forgotten?

Loss: 18 + 79 + 100 = 197 yuan.

A: Boss Wang lost a total of 197 money in this transaction.

The cost of this gift is 18 yuan, and the boss bought it for 18+...The list price is 21 yuan. 21-8=3

As a result, the young man shelled out $100 for the gift.

Boss Wang had no change at that time, so he used the 100 yuan to exchange 100 yuan for 100 yuan from the neighborhood, and found 79 yuan for the young man. Given **79, the young man got 82 18+79....

But the neighborhood later found out that the 100 yuan was a counterfeit banknote, and Boss Wang had no choice but to return the neighborhood 100 yuan.

**Say: I got $18 for the item, $79 for real money.

The boss said: I lost 100-(100-79) + 79 + 18 = 176 yuan

Your question, I really think I came up with it, I read such a simple question, so sad, how can someone not be so simple?

I'll help you calculate 21-18=3, and 3 is your money.

In the return of 100 people, that is, 3-100 = -97

So it was accompanied by 97 yuan.

Think about it from another point of view, how much the buyer makes = how much you accompany.

The buyer earned 97 = you accompanied 97

It's so simple that there are wrong answers,,It's so depressing.

If you have a problem, find me, if there is no problem, you can give me + points Thank you)

Boss Wang originally had a genuine 100 yuan bill, and then exchanged the young man's 100 yuan fake bill for someone else's 100 yuan real banknote........., and so on, and so onI won't talk about it. The answer is 97.

97 yuan. How much he also earned 3 yuan.

The number of people who got both questions right is repeated, the number of people who get both questions right when they count the first question right, and the number of people who get both questions right when they count the number of people who get both questions right, which is equivalent to repeating ten people, so subtract is the number of people in the class.

First of all, if each person only gets one question right, 28 + 25 = 53 people, there are 10 people who do all the questions correctly. Therefore, 53-10 = 43 yuan.

28 + 25 = 55 (people) is the total number of people in the whole class, but the number of people who are both correct in 2 ways is added, so it is necessary to subtract 10 28 + 25-10 = 45 (people).

A: There are 45 students in this class.

The 10 people who got both questions right are included in both 28 and 25, so 28+25-10 is the answer.

You can draw.

Draw two intersecting circles and divide them into three parts, write 28 in the first half-circle, 25 in the third half-circle, and 10 in the middle circleSo I know that the whole part is 28+25, but I overcount the 10 of the overlapping part so subtract 10

28+25-10=43

The 10 people who got both courses right counted more than once, so they should be subtracted.

Solution: Original formula = 53-10*z (representing a natural number).

me.