Question

ПОМОГИТЕ РЕШИТЬ!!!! Первая бригада может выполнить задание за 40 дней.При совместной работе две бригады выполнят задание за 25 дней.Сможет ли вторая бригада, работая отдельно, выполнить то же задание за 67 дней?

Answer 1

25 * (1/ 40  +  x)  =  1
x  =  1 / 25  -  1/40
x  =  3 / 200  ----Производ.  2  бригады
200 / 3  =  66 2/3 <  67  ----  сможет

Answer 2

Problem Analysis

We are given the following information: - The first brigade can complete the task in 40 days. - When two brigades work together, they can complete the task in 25 days.

We need to determine if the second brigade, working alone, can complete the same task in 67 days.

Solution

Let's assume that the work required to complete the task is represented by the variable "W" (in some unit of measurement).

From the given information, we can derive the following equations:

1. The first brigade can complete the task in 40 days, so their work rate is W/40 per day. 2. When two brigades work together, they can complete the task in 25 days, so their combined work rate is W/25 per day.

To determine if the second brigade can complete the task alone in 67 days, we need to calculate their work rate.

Let's assume the work rate of the second brigade is x (in some unit of measurement) per day.

According to the problem, the combined work rate of the two brigades is W/25 per day. Therefore, we can write the equation:

W/40 + x = W/25

Simplifying the equation, we get:

W/40 - W/25 = x

To find the value of x, we need to know the value of W. Unfortunately, the problem does not provide this information. Without the value of W, we cannot determine if the second brigade can complete the task alone in 67 days.

Therefore, based on the given information, we cannot determine if the second brigade can complete the same task in 67 days when working alone.

Please let me know if there is anything else I can help you with!