Question

СРОЧНО РЕШИТЕ В трёх коробках 265книг. В первой коробке книг в 3 раза больше, чем в третьей, а во второй на 15 книг больше, чем в третьей. Сколько книг в каждой коробке. ПОСТАВЛЮ 99 БАЛОВ

Answer 1

Третья коробка — х.

Тогда первая коробка — 3x, а вторая коробка — x+15.

Всего книг 265, следовательно:

x+3x+(x+15)=265

5x+15=265

5x=265-15

5x=250

x=250:5

x=50 (книг) — в третьей коробке.

В первой коробке: 50×3=150 (книг)

Во второй коробке: 50+15=65 (книг)

Ответ: 150 книг, 65 книг, 50 книг.

Answer 2

Ответ:

x- 3кор.,х+15 - 2 кор., 3х - 1 кор. составим уравнение х+(х+15)+3х=265, 5х=250, х =50. Ответ: 3 кор.-50 книг, 2кор- 65, 3 кор - 150

Answer 3

Problem Analysis

We are given three boxes containing a total of 265 books. The number of books in the first box is three times the number of books in the third box, and the number of books in the second box is 15 more than the number of books in the third box. We need to determine the number of books in each box.

Solution

Let's assume the number of books in the third box is x.

According to the given information: - The number of books in the first box is three times the number of books in the third box, so it is 3x. - The number of books in the second box is 15 more than the number of books in the third box, so it is x + 15.

The total number of books in all three boxes is 265, so we can write the equation:

x + 3x + (x + 15) = 265

Simplifying the equation:

5x + 15 = 265

Subtracting 15 from both sides:

5x = 250

Dividing both sides by 5:

x = 50

Therefore, there are 50 books in the third box.

The number of books in the first box is three times the number of books in the third box, so it is 3 * 50 = 150 books.

The number of books in the second box is 15 more than the number of books in the third box, so it is 50 + 15 = 65 books.

Answer

Therefore, there are 150 books in the first box, 65 books in the second box, and 50 books in the third box.