Question

Студенты сельхозакадемии посадили елочки загородной зоне,первая группа посадила на 135 елей меньше чем третья ,вторая группа высадила в 3 раза больше елей чем третья ,всего студентам удалось высадить 7865 елей.сколько елей посадили каждая группа отдельно?

Answer 1

(x+135)+(x×3)+x=7865
7865-x=(x+135)+(x×3)

Answer 2

Calculating the Number of Trees Planted by Each Group

To calculate the number of trees planted by each group, we can use a system of equations based on the given information.

Let's denote: - The number of trees planted by the first group as x - The number of trees planted by the second group as y - The number of trees planted by the third group as z

We have the following information: 1. The first group planted 135 fewer trees than the third group: x = z - 135. 2. The second group planted three times as many trees as the third group: y = 3z. 3. The total number of trees planted by all groups is 7865: x + y + z = 7865.

Now, we can solve these equations to find the values of x, y, and z.

Solving the Equations

Using the given information, we can solve for the values of x, y, and z.

From the first piece of information, we have: x = z - 135.

From the second piece of information, we have: y = 3z.

And from the third piece of information, we have: x + y + z = 7865.

Now, we can substitute the expressions for x and y into the third equation and solve for z.

Substituting x = z - 135 and y = 3z into the equation x + y + z = 7865, we get: (z - 135) + 3z + z = 7865, 5z - 135 = 7865, 5z = 8000, z = 1600.

Now that we have found the value of z, we can find the values of x and y.

From x = z - 135, we get: x = 1600 - 135, x = 1465.

From y = 3z, we get: y = 3 * 1600, y = 4800.

Conclusion

Therefore, the number of trees planted by each group is as follows: - The first group planted 1465 trees. - The second group planted 4800 trees. - The third group planted 1600 trees.