Question

На полке было 1225 тетради тетради продавали три дня каждый день поровну после этого на полке осталось 226 тетрадей сколько тетрадей продавали каждый день

Answer 1

1225-226=999
999/3=333

Ответ: каждый день продавали по 333 шт

Answer 2

Problem Analysis

We are given that there were 1225 notebooks on a shelf. These notebooks were sold evenly over three days, and after that, there were 226 notebooks left on the shelf. We need to determine how many notebooks were sold each day.

Solution

Let's assume that the number of notebooks sold each day is represented by the variable x.

On the first day, x notebooks were sold, leaving 1225 - x notebooks on the shelf. On the second day, another x notebooks were sold, leaving 1225 - x - x = 1225 - 2x notebooks on the shelf. On the third day, the remaining x notebooks were sold, leaving 1225 - 2x - x = 1225 - 3x notebooks on the shelf.

According to the information given, after three days, there were 226 notebooks left on the shelf. So we can set up the following equation:

1225 - 3x = 226

Now we can solve for x to find the number of notebooks sold each day.

Calculation

Let's solve the equation:

1225 - 3x = 226

Subtracting 1225 from both sides:

-3x = 226 - 1225 -3x = -999

Dividing both sides by -3:

x = -999 / -3 x = 333

Answer

Therefore, 333 notebooks were sold each day.

Verification

To verify our answer, let's substitute x = 333 into the equation:

1225 - 3(333) = 1225 - 999 = 226

The result matches the given information, so our answer is correct.