Question

Б) в шкафу на первой полке стоит 120 книг, на второй в 2 раза больше, чем на первой, а на третьей - - в 3 разаменьше, чем на второй. На сколько книг на третьей полкеменьше, чем на первой?Можно с КРАТКОЙ записью​

Answer 1

Ответ:

1 - 120 к

2-? к на 2 больше

3-в 3 меньше

1) 120+2=122(2)

2) 122 :2 =120(3)

Пошаговое объяснение:

ответ: 120 к в 3 шкафу

Answer 2

Problem Analysis

We are given the following information about the number of books on each shelf:

- The first shelf has 120 books. - The second shelf has twice as many books as the first shelf. - The third shelf has three times fewer books than the second shelf.

We need to determine the difference in the number of books between the third shelf and the first shelf.

Solution

Let's calculate the number of books on each shelf step by step:

1. The first shelf has 120 books. 2. The second shelf has twice as many books as the first shelf, so it has 2 * 120 = 240 books. 3. The third shelf has three times fewer books than the second shelf, so it has 1/3 * 240 = 80 books.

To find the difference in the number of books between the third shelf and the first shelf, we subtract the number of books on the third shelf from the number of books on the first shelf:

120 - 80 = 40.

Therefore, there are 40 books on the third shelf less than on the first shelf.

Answer

The number of books on the third shelf is 40 books less than on the first shelf.