Question

12. За 25 робочих днів бригада лісорубів у складі 20 чоловік заготовила 1800 м дров. Скільки Пров заготовить бригада з 15 чоловік за 30 днів при такій самій продуктивності праці?​

Answer 1

Ответ:

1)1620:30=54 куб заготує 1 робочий за 24 дні

2)54:24=2,25 куб м заготує 1 робочий за 1 день

3)20*2,25=45 куб м заготують 20 робочих за 1 день

4)45*40=1800 куб м заготують 20 робочих за 40 днів

Пошаговое объяснение:

Answer 2

To solve this problem, we can use the concept of proportionality. Let's assume that the amount of firewood produced is directly proportional to the number of workers and the number of days worked.

In the given scenario, a brigade of 20 lumberjacks completed 1800 meters of firewood in 25 working days. We can set up a proportion to find out how much firewood a brigade of 15 lumberjacks can produce in 30 days, assuming the same productivity.

Let's denote the amount of firewood produced by the first brigade as F1, the number of workers as W1, and the number of days worked as D1. Similarly, let's denote the amount of firewood produced by the second brigade as F2, the number of workers as W2, and the number of days worked as D2.

According to the given information: F1 = 1800 meters W1 = 20 lumberjacks D1 = 25 days

We need to find F2 when: W2 = 15 lumberjacks D2 = 30 days

To set up the proportion, we can use the formula: (F1/W1) = (F2/W2) * (D1/D2)

Substituting the given values: (1800/20) = (F2/15) * (25/30)

Simplifying the equation: 90 = (F2/15) * (5/6)

To solve for F2, we can cross-multiply and divide: 90 * (6/5) = F2 F2 = 108 meters

Therefore, a brigade of 15 lumberjacks can produce 108 meters of firewood in 30 days, assuming the same productivity as the first brigade.

Please note that the above calculation assumes a constant productivity rate and does not take into account any potential variations or factors that may affect the actual productivity of the lumberjacks.