Question

Задача: За первый год строительная компания построила 3/25 всего жилого квартала, за второй год - ещё 48% квартала, а за третий - остальные 12 домов. Сколько всего домов было построено в жилом квартале?

Answer 1

Ответ:

30 всего домов было построено в жилом квартал

Пошаговое объяснение:

Решение:

1) Из всех домов мы уберем 3/25, тогда остаётся только не завершонная часть

"1" - это все дома

1-3/25=22/25

2)Теперь у нас не завершённных осталось только 22/25. От них мы снова уберем завершённных частей (48%)

22/25 - 48% = 22/25 - 48/100 = 2/5

3) И тут мы видим что на 3 год у нас осталось 2/5 не завершённных домов.

2/5 = 12

4) И на последнем этапе мы должный узнать сколько домов достроили и добавить в него недостроенных.

"1" - это все дома

1-2/5=3/5

3/5=2/5+1/5=12+12÷2=12+6=18

18+12=30

Answer 2

Ответ:30

Пошаговое объяснение: 3/25 сначала переводим в проценты 3/25*100=12 % построили в первый год. 12(%)+48(%)=60(%) построили за два первых года. 100-60=40% построили в третий год, то есть 12 домов это 40%. 12 умножаем на 100 и делим 40 получается 30 домов было построено всего

12*100/40=30

Answer 3

Calculation of the Number of Houses Built in the Residential Quarter

To calculate the total number of houses built in the residential quarter, we need to consider the construction progress over three years.

1. First Year: The construction company built 3/25 of the total residential quarter. 2. Second Year: In the second year, an additional 48% of the remaining residential quarter was built. 3. Third Year: In the third year, the remaining 12 houses were built.

To find the total number of houses built, we'll follow these steps:

Step 1: Calculate the number of houses built in the first year. - The construction company built 3/25 of the total residential quarter. - Let's assume the total number of houses in the residential quarter is represented by x. - Therefore, the number of houses built in the first year is (3/25) * x.

Step 2: Calculate the number of houses remaining after the first year. - The remaining houses after the first year can be calculated as x - (3/25) * x.

Step 3: Calculate the number of houses built in the second year. - The construction company built an additional 48% of the remaining residential quarter. - The number of houses built in the second year is (48/100) * (x - (3/25) * x).

Step 4: Calculate the number of houses remaining after the second year. - The remaining houses after the second year can be calculated as (x - (3/25) * x) - (48/100) * (x - (3/25) * x).

Step 5: Calculate the number of houses built in the third year. - The construction company built the remaining 12 houses. - Therefore, the number of houses built in the third year is 12.

Step 6: Calculate the total number of houses built. - The total number of houses built is the sum of the houses built in each year: (3/25) * x + (48/100) * (x - (3/25) * x) + 12.

Let's calculate the total number of houses built in the residential quarter.

Calculation:

Step 1: Number of houses built in the first year: (3/25) * x.

Step 2: Number of houses remaining after the first year: x - (3/25) * x.

Step 3: Number of houses built in the second year: (48/100) * (x - (3/25) * x).

Step 4: Number of houses remaining after the second year: (x - (3/25) * x) - (48/100) * (x - (3/25) * x).

Step 5: Number of houses built in the third year: 12.

Step 6: Total number of houses built: (3/25) * x + (48/100) * (x - (3/25) * x) + 12.

Now, let's calculate the total number of houses built in the residential quarter.

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