Question

На першій ділянці в 5 разів більше саджанців, ніж на другій. З першої викопали 50, а на другу посадили 90. Стало порівну. Скільки було на кожній ділянці спочатку? Решите пж Очень надо. Решить не могу, реву-_-

Answer 1

На второй - обозначим через Х.
Тогда можно написать выражение.
5*Х - 50 = Х + 90 - пересадили и стало поровну.
Упрощаем
4*Х = 90 + 50 = 140
Х = 140 : 4 = 35 шт - на второй -  ОТВЕТ
35*5 = 175 шт - на первой - ОТВЕТ

Answer 2

Problem Analysis

We are given two plots of land, and the number of seedlings on the first plot is 5 times greater than the number on the second plot. Initially, 50 seedlings were dug up from the first plot, and 90 seedlings were planted on the second plot. After these operations, the number of seedlings became equal on both plots. We need to find the initial number of seedlings on each plot.

Solution

Let's assume the initial number of seedlings on the second plot is x. Since the number of seedlings on the first plot is 5 times greater, the initial number of seedlings on the first plot is 5x.

After digging up 50 seedlings from the first plot, the number of seedlings on the first plot becomes 5x - 50. After planting 90 seedlings on the second plot, the number of seedlings on the second plot becomes x + 90.

According to the problem, the number of seedlings becomes equal on both plots. Therefore, we can set up the following equation:

5x - 50 = x + 90

Now, let's solve this equation to find the value of x.

5x - x = 90 + 50

4x = 140

x = 35

So, the initial number of seedlings on the second plot was 35, and the initial number of seedlings on the first plot was 5x = 5 * 35 = 175.

Therefore, there were initially 175 seedlings on the first plot and 35 seedlings on the second plot.

I hope this helps! Let me know if you have any further questions.