Question

На двух полках книг было поровну. с верхней полки сначало взяли одну книгу, а затем на неё поставили 8 книг, а на нижнюю полку поставили 4 книги. на сколько больше книг стало на верхней полке, чем на нижней ?

Answer 1

на верхней полке стало на 3 книги больше

допустим на обоих полках было по 2 книги,на верхней полке отними 1 и прибавь 8,получается 9,а на нижней только прибавь 4,получается э,ну и смотри 9-6=3,на 3 больше,и можно подставить другие числа,будет то же самое

Answer 2

на 3 книги на верхней полке стало больше чем на нижней.

Answer 3

Problem Analysis

We are given that there are an equal number of books on two shelves. One book is taken from the top shelf, and then 8 books are placed on top of it. On the bottom shelf, 4 books are placed. We need to determine the difference in the number of books between the top and bottom shelves.

Solution

Let's assume the initial number of books on each shelf is x.

1. One book is taken from the top shelf, so the number of books on the top shelf becomes x - 1. 2. Then, 8 books are placed on top of the book taken, so the number of books on the top shelf becomes (x - 1) + 8 = x + 7. 3. On the bottom shelf, 4 books are placed, so the number of books on the bottom shelf becomes x + 4.

To find the difference in the number of books between the top and bottom shelves, we subtract the number of books on the bottom shelf from the number of books on the top shelf:

Difference = (x + 7) - (x + 4) = x + 7 - x - 4 = 7 - 4 = 3

Therefore, the number of books on the top shelf is 3 more than the number of books on the bottom shelf.

Answer

The number of books on the top shelf is 3 more than the number of books on the bottom shelf.