Ask these six practical questions. Urgent!! Please hurry.

1. Let the actual distance between A and B be x kilometers.

3x=600×

x=9002, speed sum: 350 km/h.

Express: 100 3 5 = 60 km hours.

Slow train: 100 2 5 = 40 km hour.

3. A: 12 3 2 9=8

B: 12 3 3 9 = 12

C: 12 3 4 9 = 16

4. Three people read a total of 30 (4 12-3 12) = 30 12 = 360 Xiaogang: 360 3 12 = 90 books.

Xiao Ming: 360 5 12 = 150 copies.

150-90 = 60 copies.

5. The actual diameter of the circle: 2 1 100 = 200 cm.

Area: (200 2) square centimeters.

6. Upper layer Middle layer Lower layer = 4 6 8 = 2 3 4 upper layer 216 2 9 = 48

Middle layer 216 3 9 = 72

Lower 216 4 9 = 96

The first: on a map, the actual distance of 600 kilometers is represented by a 3-centimeter line segment. On this map, the distance between A and B is measured in centimeters, and the actual distance between A and B is how many kilometers is there?

3： 600=：x

x=600 ×

900 (km).

Second: A and B are 350 kilometers apart, and an express train and a slow train are driving in opposite directions at the same time, and the two trains meet after an hour. Knowing that the speed ratio of fast and slow trains is 3 2, what is the speed of these two trains?

350 km/h) The combined speed of the two cars.

100 3 (3+2)=60 (kilometers per hour) The speed of the express train.

100 2 (3+2) = 40 (kilometers per hour) The speed of a slow train.

Third: The ratio of A, B, and C is 2 3 4, and the average number is 12.

12 3 2 (2+3+4)=8 A number.

12 3 3 (2 + 3 + 4) = 12 B number.

12 3 4 (2+3+4)=16 C.

Fourth: Ding Ding, Xiao Gang, and Xiao Ming are fond of literature and read a lot of literature during the holidays. Ding Ding, Xiao Gang, and Xiao Ming read literary works at a ratio of 4 3 5

It is known that Ding Ding reads 30 more books than Xiaogang, so how many more books did the students who read the most works read more than the students who read the least?

30 4 (4+3) -3 (4+3)]=210 (book) The sum of the number of books read by Ding Ding and Xiaogang.

210 3 (4+3)=90 (book) The number of books read by Xiaogang (the least).

3： 5 =90： x

x=5 90 3=150 (book) The most.

150-90 = 60 (book) The most is 60 more than the least.

Fifth: A circle is drawn on a drawing of 1 100 with a diameter of 2 cm, what is the actual diameter and area of this circle?

1： 100=2：x

x=100×2÷1

200 (cm) diameter of a circle.

200 2 200 2 square centimeters) The area of the circle.

Sixth: Mr. Ding sorted out the 216 books in the study and prepared to put them into the upper, middle and lower layers of the bookshelf. The ratio of books to books on the upper and middle floors is 4 6, and the ratio of books to books on the middle and lower floors is 6 8, how many books should be placed on each of the three floors of the bookshelf?

Upper layer: 216 4 (4+6+8)=48 (Ben).

Middle layer: 216 6 (4+6+8)=72 (book).

Lower layer: 216 8 (4+6+8)=96 (Ben).

Question 1: 3 + 2 = 5 1 divided by 5 = 1/5 20 percent = 1/5.

1/5 multiplied by 3-1/5 multiplied by 1 = 2/5 1-2/5 = 3/5

3/5 = 210 (km) 210 divided by 3/5 = 350

Question 2: 0.8 times 50% = 0.4 (yuan) 0.8 + 0.4 = 1.2 (yuan).

18-10 = 8 (ton) 8 times yuan) 10 times yuan) (yuan).

Answer: I won't write.,I have a lot of Chinese characters to express.,Please forgive me.。

Solution:1）1.The total distance is x kilometers.

x-210+<3+2>

x=350 km.

2.The function relation is: y= (x>10).

y= meta.

1.The total distance is x kilometers.

x-210+<3+2>

Solution x=350

2.For each ton of water in excess, the water fee is RMB.

1.Solution: Let the two places be separated by x kilometers.

x-210+20%x=3x/5

x=3502.Solution: Yuan).

The first question you calculated correctly means that the answer is not the same.

3.A batch of washing machines and color TVs were shipped to the store, and the number of color TVs was 3 times that of washing machines, and now an average of 10 washing machines and 15 color TVs are sold every day, after the washing machines are sold out, there are still 120 color TVs left that have not been sold, how many washing machines and color TVs have been shipped?

120 (3*10-15) 8 days 10*8 80 15*8 120

80 washing machines were shipped. 120 color TVs.

The last question is 960 seconds in 16 minutes.

First Railway: Average Lays Per Day: 245 4=

The second railway: length, 245*3-116=619m time, 4*3=12 days.

Average daily paving: 619 12 = 51 and 12 branches 7

1. Divide by a number, and the maximum number is 180

The least common multiple of the solution is 180.

2. A number greater than 1 is divided by 1, and the minimum number is 31.

The least common multiple of the solution is 30, 30+1=31

3. The area of a rectangle is 24 centimeters, and its length and width are whole centimeters

6 Four. 4. A rectangular piece of iron, 96 cm long and 80 cm wide, should be cut into squares of the same size and there is no left, the side length of this square is 16 cm; It is cut into: 96 * 80 16 2 = 30 pieces.

5. Cut a piece of rectangular glass with a length of 52 cm and a width of 40 cm into a square with a side length of a whole centimeter and an equal area, and there is nothing left, at least how many pieces can be cut?

The greatest common divisor of the solution is 4, which can be intercepted at least: 52*40 (4*4)=130 blocks.

6. There are no more than 50 students in class five (1), and when working together in small groups, they can be divided into 3 people per group, 4 people in each group, 6 people in each group, and 8 people in each group according to the different teaching contents. There may be 48 students in this class.

Solution: Because the least common multiple of is 48.

7. A, B, and C go to the library to borrow books, A goes every 6 days, B goes every 8 days, and C goes every 9 days, if the three of them meet in the library on March 5, then when and what day will they go to the library next time?

March 5 + 72 days = August 6.

1.Solution: Since the ratio of length to width is 5:3, the length of the rectangle is 5x

That is: (3x+5x)*2=64

8x*2=64

8x=64/2

8x = 32x = 4 length = 5 * 4 = 20 (cm).

Width = 3 * 4 = 12 (cm).

Area = 20 * 12 = 240 (square centimeters).

2.Solution: Let the fruit candy be 5x kg, the toffee 3x kg, and the chocolate 2x kg.

i.e.: 3x=9

x=35x=15

2x = 6 Therefore: chocolate = 9-6 = 3 (kg).

Fruit sugar = 9-15 = -6 (kg).

That is, there are 3 kilograms of chocolate left, and 6 kilograms of fruit candy are added.

3..Solution: Let the inner angle 1 be 2x, the inner angle 2 be 3x, and the inner angle 3 be 4x, that is: 2x+3x+4x=180

9x=180

The maximum angle of x=20 is 4x=4*20=80 degrees.

Therefore, the maximum angle is 80 degrees.

4 Solution: Let the height of the cuboid be x, that is, the length is 5x, and the width is 2x.

5x*4+2x*4+x*4=128

20x+8x+4x=128

32x=128

x = 4 length = 5x = 20 width = 2x = 8 height = x = 4 volume: length * width * height = 20 * 8 * 4 = 640 (cubic centimeters) 5Solution: Let the remaining tonnage be 8x, i.e. the tonnage used is 5x.

8x = 40x = 5 tons used = 5x = 25 tons.

Original tonnage = 40 + 25 = 65 (tons).

1.Area = 20 * 12 = 240 (square centimeters).

2.Therefore: chocolate = 9-6 = 3 (kg).

Fruit sugar = 9-15 = -6 (kg).

That is, there are 3 kilograms of chocolate left, and 6 kilograms of fruit candy are added.

3..The maximum angle is 4x=4*20=80 degrees, so the maximum angle is 80 degrees.

4 Solution Volume: length * width * height = 20 * 8 * 4 = 640 (cubic centimeters) 5 questions 65 tons.

6 Questions: 510 grams 4 grams 8 grams 7 questions:

8 copies for boys 10 copies for girls 8 questions: 54 storybooks 9 questions: 45 decimeters 10 questions only know 3 sides 24,32,40 cm 11 questions:

192 square meters 12 questions: Add 15 kg of flour and leave 10 kg of sugar Original tonnage = 40 + 25 = 65 (tons).

20*12=240 (square centimeters).

9-6=3 (kg).

9-15 = -6 (kg).

That is, there are 3 kilograms of chocolate left, and 6 kilograms of fruit candy are added.

The maximum angle is 4x=4*20=80 degrees.

Therefore, the maximum angle is 80 degrees. Solution Volume: length * width * height = 20 * 8 * 4 = 640 (cubic centimeters) 5 questions 65 tons.

6 Questions: 510 grams 4 grams 8 grams 7 questions:

8 copies for boys 10 copies for girls 8 questions: 54 storybooks 9 questions: 45 decimeters 10 questions only know 3 sides 24,32,40 cm 11 questions:

192 square meters 12 questions: Add 15 kg of flour and leave 10 kg of sugar Original tonnage = 40 + 25 = 65 (tons).

Question 1: 240 square centimeters Question 2: 1 kg 3 questions:

80 degrees 4 questions: 40960 cubic centimeters 5 questions: a total of 65 tons 6 questions:

510 g 4 g 8 g 7 Questions: 8 Boys 10 Girls 8 Questions: 54 Storybooks 9 Questions:

45 dm 10 questions only know 3 sides 24, 32, 40 cm 11 questions: 192 square meters 12 questions: add 15 kg of flour and leave 10 kg of sugar Give it points.

The speed of the dog is 6 * 6 5 * 4 = 9 5 times the speed of the rabbit, and the dog can chase 4 5 meters for every meter the rabbit runs, so the dog needs 40 + 50 (4 5) = 90 meters to catch up with the rabbit.