Question

Для посева приготовлено 37 тон семян.В первый день посеяли 4/9 всех семян,а во второй день 2/5 остатка.Сколько семян осталось после 2 дней посева?Задача на нахождение целого по его части.

Answer 1

1) 36 * 4/9 = 16(т) семян посадили в 1-ый день
2) 36 - 16 = 20( т) семян осталось после 1-ого дня
3) 20 * 2/5 = 8(т) посадили во 2-ой день
4) 20 - 8 = 12(т) семян осталось после 2-ого дня
Ответ: 12 т семян осталось после 2-х дней посева.

Answer 2

Problem Analysis

To solve this problem, we need to calculate the number of seeds remaining after two days of planting. On the first day, 4/9 of the total seeds were planted, and on the second day, 2/5 of the remaining seeds were planted. We'll calculate the number of seeds remaining after each day and subtract the planted seeds from the previous day to find the final answer.

Calculation

Let's start by calculating the number of seeds planted on the first day. We know that 4/9 of the total seeds were planted. To find this value, we'll multiply the total number of seeds by 4/9.

Number of seeds planted on the first day: ``` (4/9) * 37 tons = 16.44 tons ```

Next, we'll calculate the number of seeds remaining after the first day. To find this value, we'll subtract the seeds planted on the first day from the total number of seeds.

Number of seeds remaining after the first day: ``` 37 tons - 16.44 tons = 20.56 tons ```

Now, let's calculate the number of seeds planted on the second day. We know that 2/5 of the remaining seeds were planted. To find this value, we'll multiply the number of remaining seeds by 2/5.

Number of seeds planted on the second day: ``` (2/5) * 20.56 tons = 8.224 tons ```

Finally, we'll calculate the number of seeds remaining after the second day. To find this value, we'll subtract the seeds planted on the second day from the number of seeds remaining after the first day.

Number of seeds remaining after the second day: ``` 20.56 tons - 8.224 tons = 12.336 tons ```

Therefore, after two days of planting, there are approximately 12.336 tons of seeds remaining.

Answer

After two days of planting, there are approximately 12.336 tons of seeds remaining.