Question

Нужно сделать 180 оконных рам.Одна бригада столяров может сделать эту работу за 45 дней,а другая-за 36 дней.За сколько дней эти бригады смогут сделать рамы,работая вместе?

Answer 1

1) 180:45=4(рамы/день)-производительность 1 бригады
2) 180:36=5(рам/день)-производительность 2 бригады
3) 4+5=9(рам/день)-общая производительность
4) 180:9=20(дн.)
Ответ: работая вместе, бригады выполнят всю работу за 20 дней.

Answer 2

1) 180:45=4(р) в день 2) 180:36=5(р) в день 2 бригада 3) 5+4=9(р) в 1 день 1 и 2 бригада вместе 4) 180:9=20(д) Ответ: они смогут сделать 180 рам за 20 дней.

Answer 3

Calculation of Work Days for Two Teams

To calculate the number of days it will take for two teams of carpenters to complete the task of making 180 window frames, we need to consider the work rates of each team.

Let's denote: - Team A: the team of carpenters who can complete the task in 45 days. - Team B: the team of carpenters who can complete the task in 36 days.

To find the number of days it will take for both teams to complete the task working together, we can use the concept of "work rates."

The work rate of a team is the amount of work they can complete in one day. We can calculate the work rate of each team as follows:

- Team A's work rate: 1/45 of the task per day. - Team B's work rate: 1/36 of the task per day.

When both teams work together, their work rates are additive. Therefore, the combined work rate of both teams is:

Combined work rate = Team A's work rate + Team B's work rate

To find the number of days it will take for both teams to complete the task, we can use the formula:

Number of days = Total work / Combined work rate

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

Let's calculate the number of days it will take for both teams to complete the task:

Number of days = 180 / (1/45 + 1/36)

Simplifying the equation:

Number of days = 180 / (4/180 + 5/180)

Number of days = 180 / (9/180)

Number of days = 20

Therefore, it will take both teams working together 20 days to complete the task of making 180 window frames.