Question

У фермера 4 лошади и 9 коров.Лошади требуется на месяц 135 кг сена,а трём коровам- столько сена,сколько необходимо семи лошадям.Сколько кг сена должен расходовать фермер ежемесячно на всех лошадей и коров?

Answer 1

РЕШЕНИЕ
1)  135 кг * 4 лош = 540 кг - нужно всем 4  лошадям 
2)   7 лош : 3 кор = Х лош : 9 кор -  7 лошадей = 3 коровам
Х = 7 * (9/3) = 21 лош - 21 лошадь  = 9 коров
3)   135 кг * 21 = 2835 кг - нужно всем 9 коровам
4)  2835+540 = 3375 кг - расход сена в месяц у фермера 
ОТВЕТ 3375 кг = 3 т 375 кг

Answer 2

135 х 7 =945 кг - требуется сена для 7 лошадей или для 3х коров
945 : 3 = 315 кг требуется сена для одной коровы
135 х 4 = 540 кг - требуется сена для  4х лошадей
315 х 9 = 2835 кг - требуется сена для 9 коров
2835 + 540 = 3375 кг должен расходовать фермер ежемесячно на всех лошадей и коров.

Answer 3

Calculation of Hay Consumption for Horses and Cows

To calculate the amount of hay the farmer needs to spend on all the horses and cows, we need to determine the hay consumption for each animal and then add them together.

Given information: - The farmer has 4 horses and 9 cows. - The horses require 135 kg of hay per month. - Three cows require the same amount of hay as seven horses.

Let's break down the calculation step by step:

1. Calculate the hay consumption for three cows: - Since three cows require the same amount of hay as seven horses, we can calculate the hay consumption for three cows by dividing the hay consumption for seven horses by seven and then multiplying by three. - Hay consumption for three cows = (135 kg / 7 horses) * 3 cows

2. Calculate the total hay consumption for all the animals: - To calculate the total hay consumption, we need to add the hay consumption for four horses and the hay consumption for nine cows. - Total hay consumption = Hay consumption for four horses + Hay consumption for nine cows

Let's calculate the values:

1. Calculate the hay consumption for three cows: - Hay consumption for three cows = (135 kg / 7 horses) * 3 cows - Hay consumption for three cows = (135 kg / 7) * 3 cows - Hay consumption for three cows ≈ 19.2857 kg

2. Calculate the total hay consumption for all the animals: - Total hay consumption = Hay consumption for four horses + Hay consumption for nine cows - Total hay consumption = (135 kg * 4 horses) + (19.2857 kg * 9 cows) - Total hay consumption ≈ 540 kg + 173.5713 kg - Total hay consumption ≈ 713.5713 kg

Therefore, the farmer needs to spend approximately 713.5713 kg of hay every month on all the horses and cows.