Check in of a tour group A tour group to a hotel accommodation, a total of 18 rooms, each 200 yuan per day, the tour group leader asked for group discounts, the hotel manager said: "from the first room, respectively charge 2 yuan, 4 yuan, 8 yuan, 16 yuan Until the 18th room, is that ok? "The head of the tour agreed with a smile, but he was silly when he checked out the next day. Can you figure out how much the tour group should pay? Did you get a discount?

Check in of a tour group A tour group to a hotel accommodation, a total of 18 rooms, each 200 yuan per day, the tour group leader asked for group discounts, the hotel manager said: "from the first room, respectively charge 2 yuan, 4 yuan, 8 yuan, 16 yuan Until the 18th room, is that ok? "The head of the tour agreed with a smile, but he was silly when he checked out the next day. Can you figure out how much the tour group should pay? Did you get a discount?

The total number of 18 rooms is 524316
If it's 200 yuan per room, 200 * 18 = 3600 yuan
From this, we can see that there is no discount at all, and there are many times more! Of course, in the end, the team leader will not give so much money!

Seven teachers and six students from a middle school formed a tour group to travel at their own expense in a park. At the ticket office at the gate of the park, they found that there were various discount methods for buying tickets: (1)
Students can get a 60% discount with their student ID card. (2) 15 of the 20 tour groups can enjoy a 70% discount. (3) special circumstances can enjoy a 20% discount for the group. Please design at least three schemes to buy tickets, find out the best one and explain the reasons

1. The teacher buys the full ticket, the student certificate buys 6% discount
2. Pull up 7 people on the spot, make up 20 people, among them 15 people 70% discount
3. I don't know about special circumstances

On June 1, Mr. Wang took 46 students to go boating in the park, taking a total of 9 boats, including 6 people in each big boat and 6 in each small boat
On June 1, Mr. Wang took 46 students to go boating in the park. A total of 9 boats were taken, including 6 for each big boat and 4 for each small boat. How many boats and boats are there?

The whole class goes boating in the park. If one boat is rented less, each boat will take nine people. If one boat is set more, each boat will take six people
How many boats did the class plan to organize?

If there are x people and Y ships, there are equations
1）X=9*(Y-1)
2) X=6*(Y+1)
1) - 2) 3y-15 = 0,
The solution is y = 5, x = 36

Go boating in the park. If each boat takes 6 people, there will be one less boat; if each boat takes 9 people, there will be one empty boat. How many boats are there? How many people are there

There are x ships,
6（x+1)=9(x-1)
6x+6=9x-9
3x=15
x=5
6(x+1)=36
So there are five boats, 36 people

How many boats did they rent? How many people did they go?

We chartered x ships
（x+1）*6=（x-1）*9
6x+6 =9x-9
6x-9x =-9-6
-3x =-15
x =5
(5+1）*6=6*6=36
It should be

Class three (1) go boating in the park. If each boat takes 4 people, there will be 1 less boat; if each boat takes 6 people, there will be 4 more boats. How many boats are there in the park? How many students are there in class three (1)?

(4 × 1 + 6 × 4) / (6-4) = (4 + 24) / (6-4) = 28 ／ 2 = 14; (14-4) × 6 = 10 × 6 = 60 (people). Answer: there are 14 boats in the park, and there are 60 students in class 3 (1)

The ticket price of a park in a city is shown in the table below. There are more than 100 students in class A and class B of grade seven in Zhonghua school
To participate in the activities in the park, there are more than 50 people in class A and less than 50 people in class B. If you buy tickets for each class, the two classes should pay a total of 920 yuan. If the two classes together buy tickets as a group, it only costs 515 yuan. How many people are there in class A and class B?
Ticket number: 1 ~ 50, 51 ~ 100, more than 100
10 yuan / person 8 yuan / person 5 yuan / person

There are x in class A and Y in class B. 8x + 10Y = 920 (x + y) 5 = 515, 55 in class A and 48 in class B

Ticket price of a park
It's 12 yuan for 50 people, 51-100 yuan, 10 yuan. There are 104 people in two classes. There are less than 50 people in one class. There are more than 50 people in two classes?

If there are x people in class one, there will be (104-x) people in class two
12X+10(104-X)=1136
12X+1040-10X=1136
2X=1136-1040
2X=96
X=48
104-X=104-48=56
There are 48 people in class one and 56 people in class two

The park ticket prices are as follows:
Number of tickets purchased: 1-50, 51-100, more than 100
Price of each ticket: 13 yuan, 11 yuan, 9 yuan
A total of 104 students from seven (1) and two (2) classes of a school went to visit the park, of which the number of students in class (1) was less than 50
① How much money can be saved if the two classes unite to buy tickets as a group?
② How many students are there in each class?
③ If class 7 (1) organizes a tour to the park alone, how can you save money by buying tickets
The previous one is really wrong, using one variable linear equation to solve

1: Group ticket: 104 * 9 = 936
2: If there are x people in class one, then the number of people in class two (104-x): 13 * x + (104-x) * 11 = 1240
The solution is x = 48
3: Because if you buy 48 people's tickets, you should pay 48 * 13 = 624 in total, if you buy 51 people's tickets, you should pay 51 * 11 = 561 in total, so you should buy 51 people's tickets to save the most money
Please accept the original, thank you