A hotel room department has 3 rooms, double room, charge

A hotel room department has 3 rooms, double room, charge

There are three rooms and double rooms in the room department of a hotel. The charge standard is 180 yuan for three rooms per day and 160 yuan for double rooms per day. During the national day, there is a 50% discount for group people. During the discount period, a 50 person tourist team comes to the hotel and stays in some three room and double room. If each room is full, and one day

There are three rooms in the room department of Huayun Hotel, and the charge data of double rooms are shown in the table. In order to attract tourists, 50% discount is implemented for group occupancy of ordinary rooms. A group of 50 people stay in the hotel during the discount period, and they live in some three (ordinary) and double ordinary rooms. If each room is just full, and the total accommodation fee for one day is 1510 yuan; Ordinary (yuan / Room / day) luxury (yuan / Room / day) three room 150 300 double room 140 400 (1) how many three room and double room do you live in? (2) How much more does it cost to stay in the same way if the deluxe room is 40% off?

(1) If there is a triple x room, the double room is 50 − 3x2. According to the meaning of the question, 75X + 70 × 50 − 3x2 = 1510, the solution is: x = 8, then 50 − 242 = 13 (rooms). Answer: there are 8 triple rooms and 13 double rooms; (2) the cost of living in a luxury room is: 8 × 120 + 13 × 160 = 3040, the extra cost is: 3040-1510 = 1530 (yuan). Answer: the same way, the extra cost is 1530 yuan

There are three rooms and double rooms in the room department of a hotel, and the charge is 150 yuan and 140 yuan respectively. In order to attract tourists, 50% discount for group stay is implemented, and 50% discount for each room
A tour group of 50 people to stay in a hotel, two kinds of rooms are occupied, and just full, a total of 1510 yuan, then how many rooms each of the two kinds of rooms

Set up a tour group to live in X beds for three
150/2*x+ 【（50-3x）/2】*（140/2）=1510
x=8
13 double rooms

There are three rooms and double rooms in the room department of a hotel. The charge data is shown in the table below. In order to attract tourists, 50% discount for group stay is implemented. Each room has 50 people
If each room is just full and the total cost is 1510 yuan per day, how many rooms have the group stayed in?
Ordinary (yuan / Room / day) luxury (yuan / Room / day)
Three people 150 300
Double room 140 400
Bivariate linear equation bivariate linear equation bivariate linear equation bivariate linear equation bivariate linear equation bivariate linear equation

There are three X rooms, double y rooms
3X+2Y=50
150/2*X+140/2*Y=1510
X=8 Y=13
So there are 8 triple rooms, 13 double rooms