Question

На аллее росли каштаны и клёны, причем каштаны составляли 38% всех деревьев. Клёнов было на 72 дерева больше, чем каштановые. Сколько всего деревьев было на аллее?

Answer 1

1) 100-38=62% - росло клёнов.
2) 62-38=24% - на столько клёнов было больше, чем каштанов.
3) пропорция:
24% - 72 дерева
100% - х
х = 72•100/24 = 300 деревьев росли на аллее.

Answer 2

Calculation of the Total Number of Trees on the Avenue

To calculate the total number of trees on the avenue, we need to determine the number of chestnut trees and maple trees separately.

Let's assume that the total number of trees on the avenue is represented by the variable T.

According to the given information: - Chestnut trees make up 38% of all the trees on the avenue. - Maple trees are 72 trees more than chestnut trees.

To calculate the number of chestnut trees, we can use the equation: 0.38T = number of chestnut trees

To calculate the number of maple trees, we can use the equation: 0.62T = number of maple trees (since 100% - 38% = 62%)

According to the given information, the number of maple trees is 72 more than the number of chestnut trees. Therefore, we can write the equation: number of maple trees = number of chestnut trees + 72

Now, let's solve these equations to find the total number of trees on the avenue.

Solution:

1. From the equation 0.38T = number of chestnut trees, we can solve for the number of chestnut trees: - number of chestnut trees = 0.38T .

2. From the equation number of maple trees = number of chestnut trees + 72, we can substitute the value of the number of chestnut trees from the previous equation: - number of maple trees = 0.38T + 72.

3. Since the total number of trees on the avenue is the sum of the number of chestnut trees and the number of maple trees, we can write the equation: - T = number of chestnut trees + number of maple trees.

Now, let's substitute the values from step 1 and step 2 into the equation from step 3:

T = 0.38T + 0.38T + 72

Simplifying the equation:

T = 0.76T + 72

Subtracting 0.76T from both sides:

T - 0.76T = 72

Simplifying further:

0.24T = 72

Dividing both sides by 0.24:

T = 72 / 0.24

Calculating the value:

T = 300

Therefore, the total number of trees on the avenue is 300.

Please note that the sources provided did not contain specific information about the number of trees on the avenue or the percentage of chestnut and maple trees. The calculation above is based solely on the given information and mathematical equations.