Question

СРОЧНО АААА!!!!!! ПЖ ПОМОГИТЕ!!! НА 36 БАЛЛОВ!С трех участков леса вывезено 864 целых 9/20 кубометра дров. Со второго участка вывезено 7/10 того количества дров, которое вывезено с первого, а с третьего – в 1,5 раза больше, чем с двух первых вместе. Сколько кубометров дров вывезено с каждого участка?

Answer 1

Х - с первого
7/10 · x - со второго
(x + 7/10 · x)·1,5 - с третьего
x + 7/10 · x + 51/20 · x = 864 9/20
85/20 · x = 17289/20
x = 17289/20 : 85/20
x = 17289/20 · 20/85
x = 17289 / 85
x = 203,4 - с первого
203,4 ·7/10 = 142,38 - со второго
203,4 + 142,38 = 345,78 - с первого и второго вместе
345,78 · 1,5 = 518,67 - с третьего

Answer 2

Наверное так...

1 кубометр = 1000 дм кубических
1/20 кубометра это 1000 дм / 20 = 50 дм.
9/20 = 50*9= 450 дм кубических

Следовательно с первого участка вывезли 864,45 кубометров дров.

1/10 первого участка это 864,45 / 10 = 86, 445
Соответственно со второго вывезено 7/10 = 86,445*7 = 605,115 кубометров

С двух первых участков вывезено 864,45 + 605,115 = 1469,565 кубометров
Следовательно с третьего вывезено 1469,565 * 1,5 = 2204,347

Answer 3

Problem Analysis

To solve this problem, we need to determine the amount of firewood that was taken from each of the three forest sections. We are given the following information: - From the first section, 864 and 9/20 cubic meters of firewood were taken. - From the second section, 7/10 of the amount taken from the first section was taken. - From the third section, 1.5 times the combined amount taken from the first and second sections was taken.

Solution

Let's solve this problem step by step.

1. Calculate the amount of firewood taken from the second section: - The amount taken from the second section is 7/10 of the amount taken from the first section. - So, the amount taken from the second section is (7/10) * (864 + 9/20) cubic meters.

2. Calculate the combined amount taken from the first and second sections: - The combined amount taken from the first and second sections is the sum of the amounts taken from the first and second sections.

3. Calculate the amount taken from the third section: - The amount taken from the third section is 1.5 times the combined amount taken from the first and second sections. - So, the amount taken from the third section is 1.5 times the combined amount taken from the first and second sections.

Let's calculate the values step by step.

Calculation