Ask for application questions, and ask for application questions together

1. Solution: If the train travels x kilometers, the passenger car travels x + 80 kilometers, and the distance between the two places is 2 x + 80 kilometers, which is derived from the title.

x [(2x+80) 15]=(x+80) [(2x+80) 10] The solution is x=160 km, and the distance between the two places is 160*2+80=400 km.

2. Solution: There are x and y people in the A and B workshops, which are derived from the title.

x-150=y+150

x+100）/3=y-100

The solution yields x=605 and y=305

Answer: There were 605 people and 305 people in workshop A and B.

1 (1 10 + 1 15) = 6 hours.

A and B are x kilometers apart.

6/10*x-6/15*x=80

x = 400 A and B are 400 kilometers apart.

2. Set up workshop A x people, then workshop B x - 300 people.

So x-300-100=(x+100) 3 is solved. x＝650

So workshop B x-300 650-300 350 people.

1.Let the speed of the passenger car be V1, the speed of the truck is V2, the distance between A and B is S kilometers, and the time taken by the two vehicles from departure to meeting is t.

s=10*v1=15*v2 （1）

v1*t-v2*t=80 （2）

t=s/（v1+v2） （3）

Solve the equation to obtain: s = 400 (km).

2.Let the number of people in workshop A be x, and the number of people in workshop B is y

x-150=y+150 （1）

x+100=3（y-100）（2）

Solve the equation to obtain: x=650, y=350

1.Let the total distance be x, then the sum of the speed is x 10 + x 15 = x 6 and the meeting time is x (x 6) = 6 (hours).

The speed difference is x 10 - x 15 = x 30

then (x 30) x 6 = 80

x=400

2.Set up the original X people in workshop A and the original Y people in workshop B.

x-150=y+150

y-100)/(x+100)=1/3

x=650, y=350

Let's say this barrel of oil turned out to be x kilograms. Then pour out 40%*x kg for the first time, and pour out the remaining 60%*x* kg for the second time.

kilogram) divides the two pours by the corresponding score rate to get the unit 1.

40%+

Divide by kilograms) Answer: This barrel of oil turned out to be 100 kilograms.

Solution: Let barrel A have x kilograms of oil, barrel B has y kilograms of oil, and barrel C has z kilograms of oil.

x+y+z=16×3

x-y-z)×2×2=16

4z=16+16×2÷2

The solution is x=26 y=14 z=8Answer: Barrel A has 26 kg of oil, Barrel B has 14 kg of oil, and Barrel C has 8 kg of oil.

Solution: If the diameter is 4 decimeters, the radius is 2 decimeters, then the bottom area is.

The square multiplied by 2 is equal to the square decimeter.

The circumference of the base is multiplied by 4 and equals the decimeter.

And its side area is 6 times the bottom area.

Then the side area is multiplied by 6 equal to the square decimeter.

then the height is divided by 6 decimeters.

The volume of the water pass is the base area multiplied by the height, so the volume of the bucket is multiplied by 6 equal to cubic decimeters.

A: The volume of the bucket is cubic decimeters.

The keyboard used is not very standard, and the mathematical symbols are difficult to type, so I have to replace them with words, forgive me.

A cylindrical bucket with a diameter of 4 decimeters has a radius of 2 decimeters.

Base area = r 2 = 4 square decimeters.

Side area = bottom perimeter * height = 2 * r = 4 h

So h = 6 dm.

Volume = base area * height = cubic decimeters.

The volume of the cylinder is equal to = base area multiplied by height.

Base area = bottom perimeter =

Side area = height of the cylinder = 6

Hence the volume of the cylinder is equal to.

Because it is flanked by a square.

So, the circumference of the cylinder = height = cm = 2 r

r==get r=1

v cylinder = r ==

It is flanked by a square, indicating that the circumference of the high and low faces is equal.

i.e. c=h= and because c=2 r, r=1cm, base area = r2=

Volume = base area * height = cubic centimeters.

Cylinder height.

The side is a cube then, the circumference of the circle is.

2*radius r=

r=1 The area of the circle is.

Volume of the cylinder =

Because it's flanked by a square.

So the circumference of the circle on it is centimeters.

So, its radius is divided by 2 equals 1

So, the volume multiplied by one squared is equal to cubic centimeters.

Does 3 operations mean pressing the red button and then pressing the yellow key 3 times?

The result should be: give 234, press the red key to get 468, press the yellow key to get 239, then press the red key to get 468, and press the yellow key to get 239

Then the red key gets 468, press the yellow key to get 239, and the sum of the results is 2121 If the result of each key press is the number given by the next keystroke, then the result should be as follows: give 234, press the red key to get 468, press the yellow key to get 468 + 5 = 473 and then the red key to get 473 * 2 = 946, press the yellow key to get 946 + 5 = 951 and then the red key to get 1902, press the yellow key to get 1907, and the sum of the results is 6647

There are eight possibilities: 3 red, 3 yellow, red-yellow-yellow, yellow-red-yellow, yellow-yellow-yellow-red, yellow-red-red, red-yellow-red, red-red-yellow. (234+5+5+5)+(234×2×2×2)+(234+5)×2×2)+(234×2+5)×2)+(234×2×2+5)+(234×2+5+5)+(234+5)×2+5)+(234+5+5)×2)=6413

5 * 3 5 * 3 5 = 27 125 cubic meters 2, the first week used 200 * 3 10 = 60 kg.

In the second week, 60*4 5=48 kg was used.

3. Fold the rope in half 3 times and divide it into 8 parts equally, so after cutting, each section of the rope is 15 8 = 15 8 meters long.

v = cube of edge length = 8 125

The first week 200 * 3 10 = 60 kg.

2nd week 60 * 4 5 = 48 kg.

Fold it in half 3 times, then there are 8 sections, each of which is 15 8 meters long.

square meters 60 * 4 5 = 48 so 60 + 48 = 108 kg meters.

Absolute positive solution supports top top.