Question

ПОМОГИТЕ ПОЖАЛУЙСТА ДАМ 70 БАЛОВ УМАЛЯЮ ПОМОГИТЕ!! Два однакові верстати за 1 год виконують частину завдання. За який час виконали б усе це завдання чотири такі самі верстати?

Answer 1

Ответ:

Пошаговое объяснение:
2 станка = 1 час
4 станка = х часов

2/4 = х/1
х = 1 * 2 / 4
х = 2/4
х = 1/2

1/2 часа = 60/2 = 30 минут

Ответ: за 30 минут

Обратная пропорциональность

Answer 2

Ответ:

Пошаговое объяснение:

2 станка - 1 год

4 станка - х год

2/4 = х/1

4х= 2

х= 2 : 4

х= 0,5 год виконали б усе це завдання чотири такі самі верстати

Answer 3

Problem Analysis

To solve this problem, we can use the concept of work. If two identical machines can complete a task in a certain amount of time, we can calculate the time it takes for four identical machines to complete the same task.

Solution

Let's denote the time it takes for one machine to complete the task as T and the fraction of the task completed by two machines in one hour as 1/2.

The formula for the relationship between time and work is: Work = Rate × Time

For two machines, the work completed in one hour is: 1 = 2T

For four machines, the work completed in one hour is: 1 = 4T

Calculation

We can solve for T to find the time it takes for four machines to complete the task: 2T = 1 T = 1/2

So, it takes one machine half an hour to complete the task.

Answer

Therefore, four identical machines will complete the task in 1/2 hour.