Question

Реши задачу. - На первой полке центральной библиотеки стояло 627 книг, а на второй - 498. С первой полки забрали - 138 книг, а со второй — 129. На какой полке книг осталось больше и на сколько?​

Answer 1

Ответ:

1 полка - 627 -138= 489

2 полка - 498 -129= 369

489-369= 120

Ответ: на 1 полке книг осталось больше, 120

Answer 2

Problem Analysis

To solve this problem, we need to compare the number of books remaining on the first shelf and the second shelf after some books have been taken from each. We are given the initial number of books on each shelf and the number of books taken from each shelf. We need to determine which shelf has more books remaining and the difference in the number of books.

Solution

Let's calculate the number of books remaining on each shelf.

1. Initial number of books on the first shelf: 627 2. Number of books taken from the first shelf: 138 3. Number of books remaining on the first shelf: 627 - 138 = 489

4. Initial number of books on the second shelf: 498 5. Number of books taken from the second shelf: 129 6. Number of books remaining on the second shelf: 498 - 129 = 369

Therefore, there are 489 books remaining on the first shelf and 369 books remaining on the second shelf.

To determine which shelf has more books remaining, we compare the number of books on each shelf. Since 489 is greater than 369, there are more books remaining on the first shelf.

The difference in the number of books remaining is calculated by subtracting the number of books on the second shelf from the number of books on the first shelf: 489 - 369 = 120.

Therefore, there are 120 more books remaining on the first shelf compared to the second shelf.

Answer

There are more books remaining on the first shelf compared to the second shelf, and the difference in the number of books is 120.