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 килограммов сена должен расходовать фермер ежемесячно на всех лошадей и коров?

Answer 1

Problem Analysis

The problem states that a farmer has 4 horses and 9 cows. The horses require 135 kg of hay per month, while three cows require the same amount of hay as seven horses. We need to calculate the total amount of hay the farmer needs to spend on all the horses and cows each month.

Solution

Let's break down the problem step by step:

1. Calculate the amount of hay required for three cows: - Since three cows require the same amount of hay as seven horses, we can calculate the amount of hay required for three cows by multiplying the amount of hay required for seven horses by 3/7. - Amount of hay required for three cows = (Amount of hay required for seven horses) * (3/7).

2. Calculate the total amount of hay required for all the horses and cows: - The total amount of hay required for all the horses and cows is the sum of the amount of hay required for four horses and the amount of hay required for three cows. - Total amount of hay required = Amount of hay required for four horses + Amount of hay required for three cows.

Let's calculate the values step by step:

1. Calculate the amount of hay required for three cows: - From the problem statement, three cows require the same amount of hay as seven horses. - Amount of hay required for three cows = (Amount of hay required for seven horses) * (3/7).

2. Calculate the total amount of hay required for all the horses and cows: - From the problem statement, four horses require 135 kg of hay per month. - Amount of hay required for four horses = 135 kg. - Total amount of hay required = Amount of hay required for four horses + Amount of hay required for three cows.

Let's calculate the values:

1. Calculate the amount of hay required for three cows: - From the problem statement, three cows require the same amount of hay as seven horses. - Amount of hay required for three cows = (135 kg) * (3/7) = 57.857 kg.

2. Calculate the total amount of hay required for all the horses and cows: - From the problem statement, four horses require 135 kg of hay per month. - Amount of hay required for four horses = 135 kg. - Total amount of hay required = 135 kg + 57.857 kg = 192.857 kg.

Therefore, the farmer needs to spend approximately 192.857 kg of hay each month on all the horses and cows.

Answer

The farmer needs to spend approximately 192.857 kg of hay each month on all the horses and cows.