Question

В парке за 3 дня посадили 210 деревьев. Сколько деревьев было высажено в каждый из этих дней,если в первый день деревьев посадили в 2 раза меньше, чем во второй, а в третий _ на 10 деревьев больше, чем в первый? Решите без х пожалуйста. Мы еще не проходили.

Answer 1

1) 210-10=200(д)
2)200:2=100(д)-высадили во второй день
3)100:2=50(д)-высадили в первый день
4)50+10=60(д)-высадили в третий день
Ответ: 100 дер. - в 1 день, 50 дер.- во 2 день, 60 дер.- в 3 день

Answer 2

В первый день 35 во второй 105 в третий день 80 деревьев

Answer 3

Solution:

Let's solve the problem step by step.

1. Total Trees Planted in 3 Days: 210 2. Number of Trees Planted Each Day: ?

Let's denote the number of trees planted on the first day as x, on the second day as y, and on the third day as z.

Given: - *x* is half of *y* - *z* is 10 more than *x*

We can form the following equations: 1. *x + y + z = 210* (total trees planted in 3 days) 2. *x = (1/2)y* (number of trees planted on the first day is half of the second day) 3. *z = x + 10* (number of trees planted on the third day is 10 more than the first day)

Let's solve these equations to find the values of *x*, *y*, and *z*.

Calculation:

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

From equation 2, we can express *y* in terms of *x*: *y = 2x*

Substitute *y* in the first equation: *x + 2x + (x + 10) = 210* *4x + 10 = 210* *4x = 200* *x = 50*

Now we can find the values of *y* and *z*: *y = 2x = 2*50 = 100* *z = x + 10 = 50 + 10 = 60*

Answer:

So, the number of trees planted in each of the three days are: - First Day: 50 trees - Second Day: 100 trees - Third Day: 60 trees