Question

А)Бассейн имеет размеры 12 м * 25 м.Рабочий-плиточник выкладывает плиткой 3 квадратных метра в день.Сколько дней нужно рабочему,чтобы выложить плиткой пол в бассейне? б)За сколько времени выполнит эту работу бригада из 5 рабочих при условии,что они работают с однинаковой скоростью? в)Две бригады выполнили эту работу за 12 дней.Одна бригада выкладывала 12 м в квадрате в день.Какова производительность второй бригады?

Answer 1

А)
1. 12*25= 300 кв. м ( площадь пола)
2. 300:30=10 дней ( понадобится рабочему, чтобы выложить пол

Б)
1. 300::5=60 кв.м (должен выложить каждый рабочий)
2. 60:30=2 дня (понадобится каждому рабочему, а значит, всей бригаде, чтобы выложить пол)

В)
1. 12*12=144 кв.м (выложила за 12 дней первая бригада)
2. 300-144=156 кв.м (выложила за 12 дней вторая бригада)
3. 156:12=13 кв.м (выкладывав в день вторя бригада, то есть 13 кв.м - производительность второй бригады)

Answer 2

Answer:

а) To calculate the number of days it will take for the worker to tile the entire pool, we need to find the total area of the pool and divide it by the area the worker can tile in a day.

The pool has dimensions of 12 meters by 25 meters, which gives us a total area of 300 square meters.

The worker can tile 3 square meters per day.

To find the number of days needed, we divide the total area of the pool by the area the worker can tile in a day:

300 square meters ÷ 3 square meters/day = 100 days

Therefore, it will take the worker 100 days to tile the entire pool.

б) If a team of 5 workers is working at the same speed, we can calculate the time it will take for them to complete the job by dividing the total area of the pool by the combined area the team can tile in a day.

The team of 5 workers can tile a total of 5 workers * 3 square meters/day = 15 square meters per day.

Using the same total area of the pool (300 square meters), we can calculate the time it will take for the team to complete the job:

300 square meters ÷ 15 square meters/day = 20 days

Therefore, a team of 5 workers, working at the same speed, will complete the job in 20 days.

в) If two teams completed the job in 12 days, and one team can tile 12 square meters per day, we can calculate the productivity of the second team.

Let's assume the productivity of the second team is x square meters per day.

The first team can tile 12 square meters per day, so in 12 days, they would have tiled a total area of 12 square meters/day * 12 days = 144 square meters.

The second team's productivity is x square meters per day, so in 12 days, they would have tiled a total area of x square meters/day * 12 days = 12x square meters.

The combined area tiled by both teams is 144 square meters + 12x square meters.

Since the total area of the pool is 300 square meters, we can set up the following equation:

144 square meters + 12x square meters = 300 square meters

Simplifying the equation:

12x square meters = 300 square meters - 144 square meters

12x square meters = 156 square meters

x square meters = 156 square meters ÷ 12

x square meters ≈ 13 square meters

Therefore, the productivity of the second team is approximately 13 square meters per day.