Please answer three math questions, thank you!

Question 1: 1176 (6+12 6)=147 yuan.

Question 2: Meta.

Question 3: 30 [1 (10-2)-1 10] = 1200 meters.

1.1176 (6x6+12)=RMB) 147 (RMB).

Explanation: Because each table is equal to six chairs, so if he has six tables and twelve chairs is equal to 48 chairs, he finds the ** of the chairs, and then calculates the ** of each table

A: ...

Convert a table into 6 chairs, then count a total of 48 chairs, 1176 divided by 48 for a chair's **, the table is.

Let Xiaohong have a yuan and Xiao Ming have b yuan, and according to the title, A-B= will be introduced, that is, Xiaohong has more than Xiao Ming.

Let Xiaohong's velocity be x, and Xiaoqiang is (x+30) The total distance between the two is equal, so the equation is 10*x=8*(x+30), and the velocity is 120 meters, so the distance is 1200 meters.

The original price is set to $x.

10% profit without price reduction is x+x*10%=

Reduce the price by 10% and then sell at 20% profit** is x (1-10%) (1 + 20%) = price difference of 25 yuan.

So the original price is 25 (yuan.)

Solution: 1 hour up the mountain, only 30 minutes down.

Therefore, it only took 50-60 to take 2km down the mountain, and it took 2=20 minutes.

The length of the mountain road is 2 (20 60)x50 60=5 km.

Therefore, the price per square foot of the original ear is 25 (yuan.

Divided by the fractions of six-sevenths, five-fourteenths, and tenths of twenty-one, the result is that the maximum fraction of an integer is 1 42

(1) Medium + High = 31

Low + High = 26

Low + Medium = 29

Three-way full plus:

2 (Low + Medium + High) = 86

Low+Medium+High) = 43, while Medium+High=31

So low = 43-31 = 12

Question 1:

Assuming that the lower grade draws a, the middle grade draws b, and the upper grade draws c, we can see: b+c=31, a+c=26, a+b=29, and we can get that (b+c)-(a+b)+(a+c)=31-29+26, 2c=28, c=14, a=12, b=17

Question 2: The total number of people who participate in the competition is 30 + 20 + 10 = 60, and the number of people who participate in the two competitions is 60-49-1 = 10, if the number of people who participate in mathematics and English is a, that is, the number of people who participate in English and language is b, we can know that a + b = 10-3 = 7, because a is more than b, and the same is a prime number, there are 2, 3, 5 prime numbers less than 7, and only 2, 5 if the sum is equal to 7, so a = 5, that is, the number of people who participate in mathematics and English is 5.

Question 3: 35 + 40 + 37 = 112, 50 people, if all participate in the second competition, it is 100 people, 112-100 = 12, so at least 12 people participated in the third middle school competition.

The system of equations in the column is set to x for the upper grade and y for the lower grade, and you can calculate it, and the same is true below.

I'll answer later, and I'll get 20 wealth points.

1722+10000=$11722

108x80%

3.One: 27x80%$two:

$A: If you choose the first method, you will get more interest.

Question 1:

30 (cm).

Question 2: 10 2 3 = 15 (cubic centimeters).

Analysis: The volume of the cone is equal to 1 3 of the volume of the cylinder of equal height of the same bottom, and the volume that is eliminated is 2 3 of the cylinder Question 3:

Cubic centimeter) If you have any questions, you can hi me Oh I will get back to you as soon as possible!

1, cm).

2. The volume of the cone of equal height is equal to one-third of the volume of the cylinder, so the 10 cubic centimeters that are cut off are two-thirds of the volume of the cylinder, then the volume of the cylinder is equal to 10 2/3 = 15 cubic centimeters.

3 6 2 8 = cubic centimeter ( =

Solution:1Chair 135 (1+125) = 60 Desk 135-60 = 75 Answer: Desk and chair are 75 yuan and 60 yuan respectively.

2.Dance Team 24 (1-60) = 60 A; The dance team consists of 60 people.

3.7200 (1-95 +7 )=7200 Answer: The original price of the car is 60,000 yuan.

1. Chair 60, desk 75, chair x, 125%x+x=1352, choir x people.

x-24=60%x

x=60, then dance team 60-24=36

3. The original price of the car is x

x=60000

1. A set of desks and chairs is 135 yuan, the price of the desk is 125% of the price of the chair, how much is the desk and the chair?

Chair price = 135 (1+125%) = 60 yuan desk price = 60 125% = 75 yuan.

2, The dance team has 24 fewer people than the choir, and 60% of the number of choir members is the same as the number of dance teams, how many people are in the dance team?

24 (1-60%)-24=36 people.

3. For a car, the purchase in installments will be increased by 7%, and if the cash purchase is delivered according to the "ninety-five discount". Xiao Ming found that the installment payment was 7,200 yuan more than the cash purchase, what was the original price of the car?

7200 (1+7%-95%)=60000 yuan.

(1) Set the price of the chair to be x yuan x + solve x = 60 then the table 135-60 = 75 (yuan).

2) The number of dance teams is x, and the number of choir teams is y

y-x=24

The solution is x=36 y=60

3) The original price of the car is X

x(1+7%)

Solution x=60000

1.Let the chair ** be x, then the table is, x+ gets x=60, there is a chair is 60 yuan, and the table is 75 yuan.

2.Set up a dance team with a person, (a+24)*, get a = 36 people.

3.Set the price of the car to A, yes, get a = 60,000 yuan.

1 If the price of the chair is x, then the price of the table is 125%x, so x+125%x=135 solution x=60 125%x=75

2 Let the number of choirs be x and the number of dance teams be y, so x-y=24 y=60%x solution x=60 y=36

3. The original price of the car is x, 107%x-95%x=7200, and the solution is x=60000

I have solved it by using the unknown method, I hope it will help you.

How old are you? None of this!!

1.B produces 24 pcs per day.

2.Now the two of them play together, and the minutes are complete.

3.A and B work together to complete 7/12 of the total project in 2 hours

Question 1: Let A complete x parts per day and B complete y parts per day. Then:

x+y=60

4x+8y=380。。。Obtain y=35 Question 2: Let the article be in the unit "1", because "it takes 24 minutes for typist A to complete and 36 minutes for typist B to complete", so the speed of A is 1 12, and the speed of B is 1 24;Then the sum velocity of A and B is:

1/12+1/24=1/8；Therefore, the time required for two people to play together: 1 1 8 = 8 minutes.

Question 3: Let the project be the unit "1", because "A completes it in 8 hours alone, and B completes it in 6 hours alone", so the speed of A is 1 8 and the speed of B is 1 6, then the sum speed of A and B is:

1/8+1/6=7/24；7/12 of the time required to complete the entire project: (7 12) (7 24) = 2 hours.