1 The school bought back 80 sets of new desks and chairs, sharing 8,400 yuan. 70 per table, how muc

1) Set the chair to be $x.

Analysis: One table and one chair as a set.

70×80+80x=8400

x=352) set up a basketball team of x people. The dance team is 3x people.

3x-x=30

x=15 so dance team 3 15=45 people.

1) 70 80 = 5600 (yuan) 8400-5600 = 2800 (yuan) 2800 80 = 35 (yuan).

Answer; $35 per chair.

2) Solution: There are 3x people in the dance team and x people in the basketball team.

3x-x=30

2x=30x=30÷2

x=15 So dance team = 3 15 = 45 (person) answer; The dance team has 45 people and the basketball team has 15 people.

1) (8400-70 80) 80 = 35 (yuan) A: 35 yuan per chair.

2) 30 (3-1) = 15 (people).

15 3=45 (person) Answer: The dance team and basketball team have 45 and 15 people, respectively.

3x-x=30

2x=30x=15

3*15=45 people.

The dance team has 45 people and the basketball team has 15 people.

The Legislative Council today will issue a trusteeship or economic structure, and no one will be affected by the parties.

1) Set up a chair for each x yuan.

80x+80*708400

80x=2800

x=35 chairs 35 yuan each.

2) Whoever has x people on the basketball team has 3x people on the dance team.

3x-x=30

2x=30x=15

3*15=45 people.

The dance team has 45 people and the basketball team has 15 people.

Do it yourself

70 yuan ten 30 yuan) x518

2. 100 yuan x 518

2. 51,800 yuan.

Answer: The school bought 518 sets of desks and chairs, and a total of 51,800 yuan.

According to the calculation of a table with two chairs for a set of balances, the unit price of a table is 12400 200 = 62 yuan (one of the chairs in the world is 31 yuan).

Summary. Hello dear, you can send me the full question.

The school bought 14 sets of desks and chairs, and spent a total of 910 yuan, if you buy another 27 sets of such desks and chairs, how much will it cost? Now+

Hello dear, you can send me the full question.

It costs 1755 yuan.

How much does it cost to buy another 28 sets of these desks and chairs now?

Isn't it 27 sets.

Is it 27 or 28, dear?

Two questions.

Then change 27 to 28, and change the answer.

The answer to 28 sets is 1820

What was written in red pen?

Thank you, no problem.

Good pro [than heart].

Solution: = 2820 yuan.

A: A total of 2820 yuan is required.

Set each infiltration posture to change the cluster annihilation chair x yuan.

Then: 150 (110 + x) = 27000

16500+150x=27000

x=70

6,000 yuan to buy 50 sets of tables and chairs, indicating that the ** of each set of tables and chairs is:

6000 50 = 120 yuan.

The table is $85, so the chair is:

120-85 = 35 yuan.

According to the title, the following equation can be derived.

6000-50 85) 50=35, 35 yuan per chair.