Question

За тетрадь и альбом заплатили 52 руб,альбом дороже тетради на 4 руб, сколько стоит альбом? сколько стоит тетрадь?сколько нужно заплатить за 3 таких альбома? за 10 таких тетрадей?

Answer 1

Х+х+4=52
2х=52-4
2х=48
х=48:2
х=24р-тетрадь
24+4=28р-альбом
24•10=240р-за 10 тетрадей
28•3=84р-за3 альбома

Answer 2

Calculation of the Cost of the Album and Notebook

To calculate the cost of the album and notebook, we are given the following information: - The total cost of the album and notebook is 52 rubles. - The album is 4 rubles more expensive than the notebook.

Let's denote the cost of the notebook as x and the cost of the album as y.

From the given information, we can set up the following equations:

1. x + y = 52 (equation 1) 2. y = x + 4 (equation 2)

To solve this system of equations, we can substitute equation 2 into equation 1:

x + (x + 4) = 52

Simplifying the equation:

2x + 4 = 52

Subtracting 4 from both sides:

2x = 48

Dividing both sides by 2:

x = 24

Now that we have the cost of the notebook, we can substitute this value back into equation 2 to find the cost of the album:

y = 24 + 4 = 28

Therefore, the cost of the album is 28 rubles and the cost of the notebook is 24 rubles.

Calculation of the Cost of 3 Albums and 10 Notebooks

To calculate the cost of 3 albums, we multiply the cost of one album by 3:

3 * 28 = 84 rubles

Therefore, the cost of 3 albums is 84 rubles.

To calculate the cost of 10 notebooks, we multiply the cost of one notebook by 10:

10 * 24 = 240 rubles

Therefore, the cost of 10 notebooks is 240 rubles.

Please note that the information provided is based on the given equations and calculations.