Question

На двух участках росло 459 деревьев .После того как на первом участке посадили 86 деревьев ,а на другом в 2 раза меньше , то на двух участках деревьев стало поровну . Сколько деревьев росло на каждом участке первоначально?

Answer 1

1) 459+(86+86:2)=588 ( дер)                                                                           2) 588:2=294(дер)                                                                                               3)294-86=208 (дер)с одной стороны сначала                                                  4) 294-43=251(дер) с другой стороны сначала       

Answer 2

Problem Analysis

We are given two plots of land, and initially, there were a total of 459 trees growing on both plots combined. After planting 86 trees on the first plot and half as many on the second plot, the number of trees on both plots became equal. We need to determine the initial number of trees on each plot.

Solution

Let's assume the initial number of trees on the first plot is x. According to the problem, the number of trees on the second plot is half of the number on the first plot, which is x/2.

After planting 86 trees on the first plot, the total number of trees on both plots becomes x + 86 for the first plot and x/2 for the second plot.

According to the problem, the total number of trees on both plots is 459. So we can set up the following equation:

x + 86 + x/2 = 459

To solve this equation, we can multiply both sides by 2 to eliminate the fraction:

2x + 172 + x = 918

Combining like terms:

3x + 172 = 918

Subtracting 172 from both sides:

3x = 746

Dividing both sides by 3:

x = 248

Therefore, the initial number of trees on the first plot was 248, and the initial number of trees on the second plot was 248/2 = 124.

Answer

The initial number of trees on the first plot was 248, and the initial number of trees on the second plot was 124.