Who knows the correct answer to this question

It's an easy topic to get to the bottom of it. Received a 100 yuan counterfeit banknote, it's very simple to lose 100 yuan, don't talk about primary school students, uneducated know. College students think too much and accidentally get into the horns.

After doing the math, it's easy to finally figure out an answer of 97 yuan. The boss lost the gift and the 79 yuan he found for the young man, and the 100 yuan and 100 yuan in change that the neighbors had no choice but to have. The cost of the gift is 18 yuan + 79 yuan = 97 yuan, and it will be 97 yuan.

It is estimated that this college student must not be studying economics, and the gift lost by the boss is considered a cost price or a list price? The value of 3 yuan is the income of the boss from opening the store, and it is the value created by the boss himself, and when it is sold, it already contains the value created by the boss, so the loss of the gift should be calculated according to the marked price: 21 yuan + 79 yuan = 100 yuan.

In this transaction, Boss Wang actually only lost a 100 yuan counterfeit bill, and there was no other loss.

So Boss Wang lost 100-(21-18)=97 (yuan).

Not 197 and 179

The cost of 18 and 79 yuan were lost by Boss Wang, but the 100 neighbors who returned it to the neighborhood also gave him 100 (he exchanged the fake 100 for the real 100 change), so the 100 Boss Wang did not lose.

Boss Wang lost 18 + 79 = 97 (yuan).

100 + 79 + 18 = 197 (yuan).

Find out the 79 plus the item cost 18, plus the 100 for the neighbor is the answer above!

Someone was paid a piece of clothing and 10 silver coins at the end of the year, but after 7 months of work, he decided not to do it anymore, and at the checkout, he was given a piece of clothing and 2 silver coins, how many silver coins was this dress worth? (Column Equation).

Analysis: The reward for one year is to give him a dress and 10 silver coins at the end of the year, and after 7 months of work, he is given a dress and 2 silver coins. It shows that there are still 5 months to lose, 10-2 = 8 silver coins, 8 5 silver coins per month, 7 months should be 7 * 8 5 silver coins, equal to the money of a piece of clothing and 2 silver coins.

Set: This garment is worth x credits.

x+2=7*(10-2)/（12-7）

x+2=56/5

x=x=It is known that there are 4 products left after 5 type A machines are filled with 8 boxes a day, and 1 is left after 7 type B machines are filled with 11 boxes of products a day, and each type A machine produces 1 more product a day, so find how many products are in each box.

There are x products per box.

5 A-type machines for one day production: 8x+4

7 B-type machines produce in one day: 11x+1

The equation (8x+4) 5=(11x+1) 7+1 is solved to x=12

Therefore, there are 12 products in each box.

1. A 2, "Komatsu also helps Qinqin and Qingqingcai" shows that Komatsu's sister is not Qinqin and Qingqing but Lingling.

At the same time, you can also know that Xiao Gang's sister is Qingqing, and Xiao Song's sister is Qinqin.

Knowledge extension. Xiao Ming: First, Xiao Ming is the pronoun of the character, because this name is born with the temperament of cold jokes, and is famous for telling bad jokes in school, so it has become the protagonist name in many jokes, and often appears in primary and junior high school compositions, English, math problems, physics problems, chemistry problems and jokes.

2. This name has an extremely long historical connotation, appearing in various "masterpieces" in China, reflecting China's rich Chinese civilization, and even once representing China to break out of Asia and become one of the "most influential names". He has worked tirelessly to be active in various application problems and compositions, and is a well-deserved number one actor in primary school textbooks and even in the sea of questions.

3. And often cooperate with Xiao Wang, Xiao Qiang, Xiao Hua, Xiao Hong, Xiao Gang, Xiao Dong, Xiao Hua, Xiao Ru, Xiao Cao, and are known as the top ten King Kongs in the mathematics world. Today, another new generation of Xiao Ke and Xiao Yan are thriving in the field of science. He is active in jumping around in math problems, bullying our students, and his name is widely used, what is the name of the person who knows what is so pitiful!

Choosing C shows that Qingqing must be Komatsu's sister, and it is also possible that they are all Komatsu's sisters, including Xiaogang and Komaki, who may also be Komatsu's sister, according to the meaning of the title, at least Qingqing must be Komatsu's sister.

Since Komatsu also helps Qinqin and Qingqingcai, I think Lingling is Komatsu's sister.

Green! The first sentence will know, if there is no speech problem!

c The first sentence says "separately", and it is good to take a seat with the right number.

4.Ants move snake aisles, and heavy rain will arrive tomorrow.

Let's wait for someone else.

I'm sorry, but you misunderstood this question.

Finish. The three people paid a total of 30 yuan, spent 25 yuan, and the waiter hid 2 yuan, so each person spent 9 yuan, plus the 1 yuan they shared, it was exactly 30 yuan. So the dollar was found.

The algorithm of the original question mistakenly believes that the 2 yuan left by the waiter is not included in the 27 yuan, so there is an error result of 1 yuan less, and in fact, the 2 yuan left privately is included in the 27 yuan, plus the 3 yuan returned, the result is exactly 30 yuan.

I hope that the landlord can think seriously to see if the logical reasoning is right, whether there is science or not, and not to make the same mistake again in the future.

The three guests each spent 9 yuan, a total of 3 times 9 = 27 yuan, but the 2 yuan that the waiter kept was included in the three people.

In the amount of money spent, the waiter is greedy for 2 yuan of the 27 yuan, which should be 27-2 = 25, plus the boss's discount of 5 yuan, so a total of 25 + 5 = 30 yuan !!