Question

3 ручки 2 тетради стоят 3 манат. Сколько стоит тетрадь если она на 75 г пик дороже ручки?

Answer 1

Пусть х -ручка, тогда х+ 0,75  - тетрадь
3х+2*(х+0,75)=3
3х+2х+1,5=3
5х=3-1,5
5х=1,5
х=0,3
0,3+0,75=1,05 ман стоит тетрадь ( при условии что в 1 манате - 100 монет)

Answer 2

Calculating the Cost of a Notebook

To calculate the cost of a notebook, we can use the given information that 3 pens and 2 notebooks cost 3 manat. Let's denote the cost of a pen as P and the cost of a notebook as N. We also know that the notebook is 75 qepik more expensive than the pen.

Given: - 3 pens + 2 notebooks = 3 manat - Cost of notebook = Cost of pen + 75 qepik

We can set up the following equations: 1. 3P + 2N = 3 (in manat) 2. N = P + 75 (in qepik)

To solve for the cost of the notebook, we can first convert the cost of the pen to qepik and then substitute it into the first equation.

Solution

Using the second equation, we can express the cost of the pen in qepik: - P = N - 75

Substitute this into the first equation: - 3(N - 75) + 2N = 300 (converted 3 manat to qepik, 1 manat = 100 qepik) - 3N - 225 + 2N = 300 - 5N - 225 = 300 - 5N = 525 - N = 105

So, the cost of the notebook is 105 qepik.

Final Answer

The notebook costs 105 qepik.