Question

Бригада из 8 рабочих может выполнить некоторую работу за 21 день. За сколько дней, при такой же работоспособности, может выполнить эту работу бригада из 14 рабочих?

Answer 1

Такие задачи нужно решать с помощью пропорций:
8-21
14-х
х*14=8*21
х=12
Сомневаюсь немного насчет решения.Просто пропорции и такие задачи проходили уже давно:)

Answer 2

Calculation of Work Efficiency

To determine how many days a brigade of 14 workers would take to complete the same amount of work as a brigade of 8 workers, we can use the concept of work efficiency. Work efficiency is calculated by dividing the total work done by the number of workers and the number of days it took to complete the work.

Let's denote the number of workers in the first brigade as W1 (8 workers) and the number of workers in the second brigade as W2 (14 workers). The number of days taken to complete the work by the first brigade is denoted as D1 (21 days). We need to find the number of days it would take for the second brigade to complete the same work, denoted as D2.

The formula for work efficiency is:

Work Efficiency = Total Work / (Number of Workers * Number of Days)

Since the amount of work is the same for both brigades, we can equate the work efficiency of the two brigades:

Work Efficiency of Brigade 1 = Work Efficiency of Brigade 2

Using the given information, we can set up the equation:

Total Work / (W1 * D1) = Total Work / (W2 * D2)

Simplifying the equation, we get:

(W2 * D2) = (W1 * D1)

Now we can substitute the values:

(14 * D2) = (8 * 21)

Solving for D2, we find:

D2 = (8 * 21) / 14

Calculating the result, we get:

D2 = 12

Therefore, a brigade of 14 workers with the same work efficiency can complete the work in 12 days.

Answer

A brigade of 14 workers, with the same work efficiency as a brigade of 8 workers, can complete the work in 12 days.