Question

Во дворе куры и ягнята. Ягнят в 3 раза меньше , чем кур. Количество ножек кур и ягнят равно 40. Сколько кур и ягнят во дворе.Помогите решить по действиям

Answer 1

Х ягнят 
3х куры 
х*4+3х-2=40
4х+6х=40
10х=40
х=4 ягнёнка
4*3=12 кур

Answer 2

Calculating the Number of Chickens and Lambs in the Yard

To solve this problem, we can use a system of equations to represent the given information and then solve for the number of chickens and lambs in the yard.

Let's denote: - C as the number of chickens - L as the number of lambs

We are given the following information: 1. The lambs are three times smaller than the chickens, so we can express this as: L = 3C. 2. The total number of legs of chickens and lambs is 40, which can be represented as: 2C + 4L = 40 (since chickens have 2 legs and lambs have 4 legs).

Solving the System of Equations

We can now solve the system of equations to find the values of C and L.

First, we'll substitute the value of L from the first equation into the second equation: 2C + 4(3C) = 40 2C + 12C = 40 14C = 40 C = 40 / 14 C = 20 / 7

Now we can find the value of L using the equation L = 3C: L = 3 * (20 / 7) L = 60 / 7

Calculating the Number of Chickens and Lambs

So, the number of chickens (C) is approximately 20 / 7, and the number of lambs (L) is approximately 60 / 7.

Therefore, there are approximately 20 / 7 chickens and 60 / 7 lambs in the yard.

This calculation is based on the given information and the solution to the system of equations.