Question

Помогите решить задачу. Для оборудывания спортивной площадки использовалось 68 коротких и длиных реек.Короткие рейки состовляют 8/17 всех реек. Сколько длинных реек было использовано

Answer 1

$68\cdot\frac8{17}=4\cdot8=32$ - короткие рейки.
68-32 = 36 - длинных реек.

Answer 2

1) 68:17*8=4*8=32 короткие рейки                                                                      2) 68-32=36 длинных реек                                                                                  Ответ: 36 длинных реек было использовано

Answer 3

Problem Analysis

To solve this problem, we need to find the number of long rods used for equipping a sports ground, given that there are 68 short and long rods in total, and the short rods make up 8/17 of all the rods.

Solution

Let's denote the total number of rods as T. We know that the number of short rods is 8/17 of the total, so we can express this as an equation:

Number of short rods = (8/17) * T

We also know that the number of long rods is the difference between the total number of rods and the number of short rods:

Number of long rods = T - Number of short rods

Substituting the first equation into the second equation, we get:

Number of long rods = T - (8/17) * T

Solving for the number of long rods, we have:

Number of long rods = T - (8/17) * T = (17/17 - 8/17) * T = (9/17) * T

Given that the total number of rods is 68, we can solve for the number of long rods:

Number of long rods = (9/17) * 68

Calculation

Let's calculate the number of long rods: ``` Number of long rods = (9/17) * 68 = 36 ```

Answer

The number of long rods used was 36.