Question

Можно сделать 180 оконных рам Одна бригада Столяров может сделать эту работу за 45 дней а другая за 36 дня За сколько дней эта Бригада смогут сделать рамы работая вместе

Answer 1

45-36=9 дней разница
180÷9=за 20 дней

Answer 2

1)180 : 45 = 4 (рам) в день делает дна бригада
2) 180: 36 = 5 (рам) в день делает другая бригада
3) 4+ 5 = 9(рам) в день смогут сделать бригады вместе
4) 180 : 9 = 20 (дней) понадобится бригадам, чтобы сделать 180 рам,работая вместе.
Ответ: 20 дней

Answer 3

Calculation of Days Required to Complete Window Frames

To determine the number of days required for the two brigades of carpenters to complete the task of making 180 window frames, we need to calculate their combined efficiency.

Let's assume that Brigade A can make the frames in 45 days, and Brigade B can make them in 36 days.

To find the combined efficiency, we can use the formula:

Combined Efficiency = (Efficiency of Brigade A * Efficiency of Brigade B) / (Efficiency of Brigade A + Efficiency of Brigade B)

The efficiency of each brigade is calculated as the reciprocal of the number of days required to complete the task. So, the efficiency of Brigade A is 1/45, and the efficiency of Brigade B is 1/36.

Using the formula, we can calculate the combined efficiency:

Combined Efficiency = (1/45 * 1/36) / (1/45 + 1/36)

Calculating this expression gives us the combined efficiency of the two brigades.

Now, to find the number of days required to complete the task, we can use the formula:

Number of Days = Total Work / Combined Efficiency

In this case, the total work is 180 window frames.

Let's calculate the number of days required for the two brigades to complete the task.

Calculation:

Combined Efficiency = (1/45 * 1/36) / (1/45 + 1/36)

Combined Efficiency = 1/1620

Number of Days = 180 / (1/1620)

Number of Days = 180 * 1620

Number of Days = 291,600

Therefore, the two brigades working together will be able to complete the task of making 180 window frames in approximately 291,600 days.

Please note that this calculation assumes that the efficiency of the brigades remains constant throughout the entire duration of the project.