Who can solve this problem, who can solve this problem

It should be calculated like this--- 9 yuan per person, 9 plus 9 plus 9 for a total of 27 yuan; The shopkeeper collects 25, and the second child takes 2 for a total of 27, not 30, because he has already returned 3 yuan; 9*3+2=29 yuan is the wrong algorithm, and 2 belongs to 27 miles.

The money given to the boss by each person is 25 3, and the money returned is 3 yuan, so it is 3 3 yuan per person, plus 2 yuan from Xiao Er, or 30 yuan. In this case, this is the formula, (25 3+3 3)*3+2=30, the reason why different algorithms have different results, I think is because 1 is the limit value.

The dollar was at the shopkeeper's.

Actually, this topic is an old problem. The answer is what the previous floors said, and the landlord said that the calculation method is wrong, it is a misunderstanding, as for the wrong landlord, think about it again, don't be guided by the mindset!

I ft on the 2nd floor

You're better than a pig.

The three of them each got one yuan, while the shopkeeper took two yuan privately, and the boss took twenty-five yuan; 3+2+25=30, in fact, those three people, each of them paid twenty-five plus three and divided by three will be equal to nine points three three three ......

The person who posted it is really b.。。

The money for those three was 25 for the boss. was swallowed by Xiao Er for 2 yuan. That's 27 in total, where did you get 30?

Threesome 27 boss 25

Isn't the second 2 27=25+2. It's simple.

25 Dividing by 3 is the average amount paid by each person, and the average plus the one dollar returned by each person is the actual amount paid by each person

Although the formula is a bit long, it is completely in line with the thinking of the landlord

It must be this way! Believe me! yes，i do.

Oh, that's the way it goes. is 9 + 9 + 9 + 2 + 3 = 30. Isn't it? Can't you take it? The multiplication is 9*3+(5-2).

The one yuan was at the shopkeeper's, but in fact, everyone paid not 9 yuan, but yuan.

The shopkeeper received 25 yuan + 2 yuan from the shopkeeper + 1 yuan for 3 people = 30 yuan per person.

The three people spent 27 yuan in the hotel + 3 yuan recovered = 30 yuan.

Question 1: The key point is to grasp the cost of paying and the income obtained, the cost of paying: the cost of gifts is 18 yuan + the change for young people is 79 yuan + 100 yuan of fake money (0 yuan) for the neighborhood + 100 yuan is returned to the neighborhood = 197 yuan, and the income obtained:

The 100 yuan fake money (0 yuan) given by the young man + the 100 yuan change given by the neighborhood = 100 yuan, and the actual loss of Boss Wang is 197 yuan - 100 yuan = 97 yuan.

Question 2: <>

Question 1: The money lost by Boss Wang should be equivalent to what the young man gave, but the loss of the gift is calculated at cost price, so it is 18 + 79 = 97 yuan.

Question 2: On the first trip, the first team of mothers and children crossed the river first, and then the first team of mothers sailed back.

On the second trip, the first and second mothers crossed the river, and then the second team of mothers sailed back, leaving only the second and third mothers and children on the shore.

On the third trip, the mothers of the second and third teams sailed across the river, and then the children of the first team drove back to pick up the children of the second team to cross the river.

On the fourth trip, the children of the first team and the children of the second team crossed the river, and the children of the first team went back.

On the fifth trip, the children of the first team and the children of the third team crossed the river.

All cross the river safely.

Boss Wang entered 18, sold 21, and earned 3 yuan is the value created for Boss Wang, from an economic point of view, Boss Wang lost 100 yuan, but not counting the 3 yuan, Boss Wang only lost 97 yuan. First of all, the 100 yuan of Boss Wang and the neighbor is an equivalent exchange, there is no one who loses and who earns, from the perspective of the person who bought the owner, paying a fake money is equivalent to getting 79 yuan and 18 yuan without giving money.

The first question should be a loss of 76 yuan.

The second question, according to my understanding, the mother of the first team can take the piglets of the second team, the mother of the second team can take the piglets of the third team, and the piglets of the first team can be with the mother of the third team.

=3 times root number 2 - 3 (root number 2) +1 + root number 2) + (1 - root number 2) = 9 (root number 2) +2

9/2 times the root number 2+2

I can't get a score, so I can only describe it like this).

The root number is m -4>=0 and m >=4

4-m²>=0,m²<=4

So m = 4

Because the denominator m-2≠0

So m=-2

So n=(0+0+2) (-2-2)=-1 2, so mn=1

So the original formula = 1

It makes sense to have both m -4 under the root number and 4-m under the root number, then m -4=0 m= 2

m-2 is the denominator and cannot be 0

m is not equal to 2m=-2

n=2/(-2-2)=-1/2

Common sense: There is no solution. Because the sum of 3 odd numbers or odd numbers cannot be 30.

Irrational: 3! +9+15=30。

Notes: 3! =3×2×1=6

9 is 6 upside down.

This can be written upside down as 6, so: 6+11+13=30.