A math problem needs detailed explanation After receiving the money, the waiter remembered that the hotel was doing activities now, the original price was 10 yuan per person, and now the activity price was only 25 yuan for three people. But considering that the remaining 5 yuan was not easy for three people to share, he left 2 yuan for them, and then gave them 1 yuan each, The total price is 9 * 3 + 2 = 29 yuan, but the three of them pay 30 yuan. Where is the remaining 1 yuan? But in the end, the three people initially paid 10 * 3 = 30 yuan, but in the end, they only paid 29 yuan with the 2 yuan that the waiter was greedy for.

A math problem needs detailed explanation After receiving the money, the waiter remembered that the hotel was doing activities now, the original price was 10 yuan per person, and now the activity price was only 25 yuan for three people. But considering that the remaining 5 yuan was not easy for three people to share, he left 2 yuan for them, and then gave them 1 yuan each, The total price is 9 * 3 + 2 = 29 yuan, but the three of them pay 30 yuan. Where is the remaining 1 yuan? But in the end, the three people initially paid 10 * 3 = 30 yuan, but in the end, they only paid 29 yuan with the 2 yuan that the waiter was greedy for.

In fact, the cost of accommodation for three people is 25 yuan, right? Each person paid 9 yuan, a total of 27 yuan, right? But the cost of accommodation is 25 yuan, two yuan more, the extra two yuan is greedy by the waiter, that is, the waiter is greedy of the three people's money, there is no one yuan problem

If a + 3 = B-3, then a =? If 1 / 3A = 4b, then a =?

If a + 3 = B-3,
Then a = B-6
 
If 1 / 3A = 4b,
Then a = 12b
 

If 3A + 7a = 4b-3, then a + B=——
This is the original question

I really don't know how to calculate a + B = (14a + 3) / 4

Because 3A = 4b, so ()
A. a：b=3：4B. a：4=3：bC. b：3=a：4D. 3：a=4：b

Option A: because a: B = 3: 4, so 4A = 3b, option B: because a: 4 = 3: B, so AB = 12, option C: because B: 3 = A: 4, so 3A = 4b, option D: because 3: a = 4: B, so 4A = 3B

What do you mean by overhead? Give an example
① The bamboo building is about six or seven feet above the ground
② Metaphor has no foundation: without corresponding measures, a plan will become a necessary thing
③ It refers to praise on the surface and crowd out in the dark, which makes people lose real power
For example, the more examples, the better

In fact, you basically give the meaning of Overhead:
It means that the foundation of a building is not a real object. Your example is enough to illustrate the problem
2. 3 is its extended meaning, 2 is more commonly used, refers to the cause of things, the source of things does not exist in reality, imaginary by imagination, or exists in reality but does not have practical connection with the thing or thing. For example: the oil painting I painted is overhead world
3 is also an extended meaning, which means crowding out. This is less used

Suppose that the social labor productivity of a commodity in 2010 is 15 pieces per hour, and the price of each piece is 10 yuan,
Suppose that the social labor productivity of a commodity is 15 pieces per hour in 2010, and the price of each piece is 10 yuan. In 2011, the country's currency devalued by 25%, and the social labor productivity of the commodity is 20 pieces per hour. With other conditions unchanged, what is the price of each piece of the commodity in 2011? The answer is 10 yuan,

From 2010 to 2011, the social labor productivity of the commodity is (20-15) / 15 = 1 / 3. According to the formula, the price of the commodity after the increase of social labor productivity = the original price of the commodity / (L + the increased social labor productivity) the price of the commodity after the currency depreciation = the original price / (1-depreciation rate)

How to answer questions about values
Is value judgment and value choice knowledge about values?
What principles and aspects of knowledge are needed to answer questions with knowledge of values?

Value is the principle and orientation of a person's judgment of things. It refers to a person's general evaluation and view of the significance and importance of the objective things around him (including people, things and things). Value judgment and value selection are based on values, which are the expression of values, so they belong to the knowledge of values
To answer questions with the knowledge of values, the most fundamental thing is to use the basic concept of values. This point is basically used. To answer questions according to the values mentioned in Marxism Leninism, the value principle of collectivism is often used. You can answer questions on the basis of being familiar with this

Will people reduce the production of live pigs when other conditions remain unchanged and the price of pork rises? Will it increase the demand for pig feed and raise the price?

People will certainly not reduce the production of live pigs, but expand production, the price rises rapidly, can earn more money. Cause the increase in demand for pig feed, the price will rise. Pig feed and pig is a complementary commodity

Use the relevant knowledge of the government to briefly describe your understanding of the government's purchase of public services from social forces

① This is the need of transforming government functions and building a service-oriented government
② The government undertakes important functions, but it can't do everything by itself
③ The government regards the people's service as its aim and adheres to the principle of being responsible to the people. The purchase of public services can improve the quality and level of government services
④ It helps the government to administer according to law, prevent abuse of power, and enhance the credibility and prestige of the government
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Is price proportional to value?
The relationship between commodity price and value is ()
1. The price of a commodity is inversely proportional to its value
2. The price of goods is the monetary expression of value, and value is the basis of price
3. The price of goods is directly proportional to the value
4. Commodity price fluctuates around value
A.1.3.B 1.4.C 2.3.D.2.4.

In general, it is proportional. But according to the basic manifestation of the law of value - the fluctuation of price around the value, sometimes the price does not necessarily accurately reflect the value of goods. For example, when supply exceeds demand, it is the so-called buyer's market, and the seller will reduce the price of goods. At this time, it is possible that the price of goods