Question

В парке за три 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?

Answer 1

Всего 210 деревьев.
х-деревьев посадили в первый день
(2х)-посадили во второй день
(х+10)- посадили в третий день
Решение.
х+2х+х+10=210
х+2х+х=210-10
4х=200:4
х=50
50 деревьев посадили в первый день
50*2=100 деревьев посадили во второй день
50+10=60 деревьев посадили в третий день
Ответ:50;100;60.

Answer 2

Calculation of Trees Planted Each Day

To determine the number of trees planted each day in the park, we can use the information provided:

- The total number of trees planted in the park over three days is 210. - The number of trees planted on the first day is two times less than the number planted on the second day. - The number of trees planted on the third day is 10 more than the number planted on the first day.

Let's assign variables to represent the number of trees planted on each day: - Let x be the number of trees planted on the first day. - Let y be the number of trees planted on the second day. - Let z be the number of trees planted on the third day.

Based on the given information, we can set up the following equations:

1. The total number of trees planted over three days is 210: - x + y + z = 210

2. The number of trees planted on the first day is two times less than the number planted on the second day: - x = (1/2)y

3. The number of trees planted on the third day is 10 more than the number planted on the first day: - z = x + 10

To solve this system of equations, we can substitute the values of x and z from equations 2 and 3 into equation 1:

(1/2)y + y + (1/2)y + 10 = 210

Simplifying the equation:

2.5y + 10 = 210

Subtracting 10 from both sides:

2.5y = 200

Dividing both sides by 2.5:

y = 80

Now that we have the value of y, we can substitute it back into equation 2 to find the value of x:

x = (1/2)y = (1/2)(80) = 40

Finally, we can substitute the values of x and y into equation 3 to find the value of z:

z = x + 10 = 40 + 10 = 50

Therefore, the number of trees planted in each of the three days is as follows: - First day: 40 trees - Second day: 80 trees - Third day: 50 trees

Please note that the search results provided did not contain specific information about the number of trees planted in each day in the park. The calculation above is based solely on the information provided in the user's question.