Question

4 бригады собрали 1620 кг лука. 1-ая бригада собрала 35% всего лука, 2-ая бригада собрала 4/9 оставшегося, 3-тья - в одну целую одну девятую раза больше, чем вторая. Сколько лука собрала 4-тая бригада? СРОЧНО! 15 баллов

Answer 1

Первая бригада собрала 35% от 1620, то есть 567 кг лука.

Осталось 1053 кг лука.

От этих 1053 кг вторая бригада собрала 4/9, то есть 468 кг лука.

А третья группа в 10/9 раза больше, чем вторая, то есть 468 * 10/9 = 520.

1053 - (468 + 520) = 1053 - 988 = 65.

Ответ: четвертя группа собрала 65 кг лука

Answer 2

Problem Analysis

We are given the following information: - 4 brigades collected a total of 1620 kg of onions. - The first brigade collected 35% of the total onions. - The second brigade collected 4/9 of the remaining onions after the first brigade. - The third brigade collected 1 and 1/9 times more onions than the second brigade.

We need to determine how many onions the fourth brigade collected.

Solution

Let's break down the problem step by step:

1. Calculate the amount of onions collected by the first brigade: - The first brigade collected 35% of the total onions. - To find the amount, we multiply the total onions by 35% (or 0.35). - Let's denote the amount collected by the first brigade as x.

2. Calculate the amount of onions remaining after the first brigade: - To find the remaining onions, we subtract the amount collected by the first brigade from the total onions. - The remaining onions can be calculated as: total onions - amount collected by the first brigade. - Let's denote the remaining onions as y.

3. Calculate the amount of onions collected by the second brigade: - The second brigade collected 4/9 of the remaining onions after the first brigade. - To find the amount, we multiply the remaining onions by 4/9. - Let's denote the amount collected by the second brigade as z.

4. Calculate the amount of onions collected by the third brigade: - The third brigade collected 1 and 1/9 times more onions than the second brigade. - To find the amount, we multiply the amount collected by the second brigade by 1 and 1/9 (or 10/9). - Let's denote the amount collected by the third brigade as w.

5. Calculate the amount of onions collected by the fourth brigade: - The fourth brigade collected the remaining onions after the third brigade. - To find the amount, we subtract the amount collected by the third brigade from the remaining onions. - Let's denote the amount collected by the fourth brigade as q.

Now, let's calculate the values step by step:

1. Calculate the amount of onions collected by the first brigade: - x = 0.35 * 1620 kg

2. Calculate the amount of onions remaining after the first brigade: - y = 1620 kg - x

3. Calculate the amount of onions collected by the second brigade: - z = (4/9) * y

4. Calculate the amount of onions collected by the third brigade: - w = (10/9) * z

5. Calculate the amount of onions collected by the fourth brigade: - q = y - w

Let's calculate the values:

1. Calculate the amount of onions collected by the first brigade: - x = 0.35 * 1620 kg = 567 kg

2. Calculate the amount of onions remaining after the first brigade: - y = 1620 kg - 567 kg = 1053 kg

3. Calculate the amount of onions collected by the second brigade: - z = (4/9) * 1053 kg ≈ 468 kg

4. Calculate the amount of onions collected by the third brigade: - w = (10/9) * 468 kg ≈ 520 kg

5. Calculate the amount of onions collected by the fourth brigade: - q = 1053 kg - 520 kg ≈ 533 kg

Therefore, the fourth brigade collected approximately 533 kg of onions.

Answer

The fourth brigade collected approximately 533 kg of onions.