Question

а) Ученица купила тетради в клетку и линейку по одинаковой цене. Всего - 10 штук. За тетради в клетку она уплатила 150 тенге, а за тетради в линейку - 100 тенге. Сколько было куплено тетрадей в клетку и линейку по отдельности? Схему пж срочно!!!​

Answer 1

Ответ:

Пошаговое объяснение:

Купили = 10 тетрадей

Цена 1 тетради в клетку = цена 1 тетради в линейку

Тетради в клетку = 150 тг

Тетради в линейку = 100 тг

Тетрадей в клетку = ? штук

Тетрадей в линейку = ? штук

1) 150 + 100 = 250 (тг) - стоят все 10 тетрадей

2) 250 : 10 = 25 (тг) - стоит 1 любая тетрадь

3) 150 : 25 = 6 (тетр) - купила в клетку

4) 100 : 25 = 4 (тетр) - купила в линейку

Ответ: 6 в клетку, 4 в линейку

Answer 2

Ответ:

10 штук - 250 тг

х штук - 150 тг

у штук - 100 тг

х= 10*150/250=6

у=10*100/250=4

Пошаговое объяснение:

Ответ: в клетку тетрадей 6 штук, а в линейку - 4 штуки

Answer 3

Solution:

Let's solve the problem step by step.

Step 1: Define the variables: - Let's assume the number of notebooks with grids (клетку) as "x" and the number of notebooks with lines (линейку) as "y". - We know that the total number of notebooks is 10, so we have the equation: x + y = 10.

Step 2: Write the equations for the total cost: - The cost of notebooks with grids is 150 tenge each, so the total cost for these notebooks is 150x. - The cost of notebooks with lines is 100 tenge each, so the total cost for these notebooks is 100y. - We also know that the total cost is the same, so we have the equation: 150x = 100y.

Step 3: Solve the equations: - We can solve the system of equations to find the values of x and y.

Step 4: Calculate the values: - Let's solve the system of equations to find the values of x and y.

Calculation:

We have the following system of equations: 1. x + y = 10 2. 150x = 100y

Solving the system of equations: From equation 1, we can express y in terms of x: y = 10 - x.

Substitute y in equation 2: 150x = 100(10 - x) 150x = 1000 - 100x 250x = 1000 x = 4

Substitute x back into the equation y = 10 - x: y = 10 - 4 y = 6

Answer:

So, the student bought 4 notebooks with grids and 6 notebooks with lines.

I hope this helps! If you have any further questions, feel free to ask.