A 6th grade math problem requires column X 5

Suppose there are a total of x pages, and 2 3x pages are read in the next two days, so the number of pages read on the second day is: 2 3x * 5 8, and on the third day: 2 3x * 3 8

According to what is known: 2 3x * 5 8 - 2 3x * 3 8 = 15, the solution is x=90

Suppose the book has x pages.

The ratio of day 2 to day 3 is 5:3, and day 2 is known to read 15 more pages than day 3.

1-1/3)x×[5/(5+3)-3/(5+3)]=152/3)x×（2/8）＝15

2/3)x×（1/4）＝15

1/6x＝15

x 90 The book has a total of 90 pages.

Again: The ratio of the second day to the third day is 5:3, and it is known that the second day reads 15 more pages than the third day.

15 (5-3) pages) (one copy).

page) read 1/3 of the book on the first day

On the second and third days, I read two-thirds of the book with a total of 60 pages.

The book has 60 (2, 3) 90 pages.

Solution: Suppose this book has x pages.

1-1 3)x*(multiplied by meaning)[5 (5+3)-3 (5+3)]=15

2/3x*2/8=15

1/6x=15

x=90, so the book has 90 pages.

Hello! You see, what we're going to paint now is the total area of the doors, windows, and chalkboards.

So we can first calculate the total area of this classroom, s total = 9 * 6 * 4 = 216, so in addition to the area of doors and windows blackboard, the remaining area s = 216-32 = 194, and the area of the floor can not be calculated, so 194-54 = 44, and because there is no square meter 12 yuan, so it costs 144 * 12 = 1704 yuan, I am happy to serve you...

{(9 times 6 + 6 times 4 times 2 + 9 times 4 times 2)—32} and then multiplied by 12

That is, the area below is not counted, and there are the area of the other five faces minus the total area of doors and windows.

I don't have a math conformator, so that's all I have to say, thanks.

【（9*4+6*4）*2+9*6-32】*12

I'm in the sixth grade, and I use the area around + the area above and subtract 32 square meters of the total area of the blackboard from the doors and windows, and then *12

I hope you will adopt.

The area around the classroom and the ceiling = 9 * 4 * 2 + 6 * 4 * 2 + 9 * 6 = 174 square meters, minus the area of doors, windows and blackboards = 174-32 = 142 square meters, this is the area that needs to be painted, 12 yuan per square meter, a total of 142 * 12 = 1704 yuan.

(Total area of classrooms - total area of doors and windows blackboard - floor area)*12

Canopy 6x9 = 54 sqm.

All around (four sides, equal area of two pairs) 6x4 + 6x4 + 9x4 + 9x4 = 120 square meters.

Minus doors, windows and chalkboards 32 square meters.

54 + 120-32 = 142 square meters.

The unit price is 12 yuan square meter x 142 square meters = 1704 yuan.

Generally speaking, the classroom is four-sided and therefore the area is.

9*6+9*4+6*4=114 and then multiplying by 2 is 228, subtracting 32 equals 196

Finally multiply by 12 and the answer is 2352

9 times 6 plus {6 times 4 plus 4 times 9] multiplied by 2 equals 154 square meters 154 minus 32 equals 122 square meters 122 times 12 times 12 equals 1464 yuan.

Canopy area = 9 6 = 54 square meters.

Surrounding area = (9 6 2) (9 4 2) = 180 square meters, 180 + 54 = 234 square meters.

Solution: 9 6+(9 4+6 4) 2=54+120=174( )174-32=142( )

142 12 = 1704 (yuan).

A: A total of 1704 yuan is required.

I'm a freshman in junior high school.

First of all, the painting area needs to be 9x6+(9+6)x4x2-32=142 square meters.

Then calculate the money 142x12=1704 yuan.

Answer...

9 6 + 9 4 2 + 4 6 2 = 174 (square meters) 174-32 = 142 (square meters).

142 12 = 1704 (yuan).

A: A total of 1704 yuan is required.

The reward points this Modi, who will do it.

A and B have two bookshelves, each with 135 books, and want to take out 15 books from the A bookshelf and put them into the B bookshelf, so how many fractions of the bookshelves B are more than the A bookshelf?

Solution: Because it is a bookshelf, the first bookshelf is the dividend. Wish.

9x7x25 = 1575 cubic centimeters = 1575 ml.

4x5x10 = 200 cubic centimeters = 200 ml.

A: The first nipple bottle can hold 1575 ml of yogurt, which can be poured into 7 boxes of cuboid boxes, and there is 175 ml of yogurt left.

9*7*25=1575 (cubic centimeters).

1575 cubic centimeters = 1575 milliliters.

A: He can hold 1575 ml of yogurt.

7*5*10=350 (cubic centimeters).

350 cubic centimeters = 350 milliliters.

1575 350 = 4 (box)...175 (ml) A: You can pour 4 boxes, and there are 175 ml left.

What about the width of the box locket? The conditions are not complete!

The conditions of the question do not seem to be complete, according to your conditions, at least zero pairs of contestants' drinks are the same, such as: Class A selects all Coke, Class B selects all soda.

The surface area of the four walls of the room is: 2 * (6 * 3 + 4 * 3) = 60 (square meters) The total area after subtracting the area of doors and windows is: 60-7 = 53 (square meters) The total cost required: 53 * yuan).

Remember to "answer".

Because the wallpaper is pasted on the four walls of the room, the area of the top surface and the floor should be removed, so the height is multiplied by the length and width respectively, which is the area of the two adjacent walls, and the opposite surface area of the cuboid room is equal and added before multiplying by 2

6*3+4*3)*2=60 (square meters).

60-7 = 53 (square meters) minus the remaining area behind the door 53 * yuan) to calculate the total price.

Finally, because it's an application question, don't forget to have "Answer: ...

The area of the four walls of the room that needs to be wallpapered is: (6 3 2 + 4 3 2) 7 = 53 (square meters).

So you need 53 yuan of wallpaper.

A: A total of meta wallpaper is required.

(6 4 6 3) 2 84-7 = 77 (square meters) = (24 18) 2 77 yuan) = 84 (square meters).

A: A total of meta wallpapers are required.

Solution First find the area of the wallpaper, (6 3 4 3 2 7 53 (square meters)

Then find the total amount of money spent, 53 yuan

A: A total of meta wallpaper is required.

For each hungry day to do 1 5 more than planned, then 5 days can be balanced to do the original 6 days of work, 15 days to do the original (15 5) 6 = 18 days of work, the original plan to complete in 18 days.