Question

in one farm some cow and birds .if there legs are double of heads and plus 54..so how many cows are present​

Answer 1

Step-by-step explanation:

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Grace G. asked • 09/06/18

In a farm, there are some cows and birds. If there are a total of 35 heads and 110 legs, then how many cows and birds s are there?

very very very very very hard

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Mark M. answered • 09/06/18

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Each cow has 1 head and 4 legs. Each bird has 1 head and 2 legs.

Let x = number of cows and y = number of birds

Then x + y = 35

4x + 2y = 110

Multiply the first equation by -2: -2x - 2y = -70

4x+ 2y = 110

Add the equations: 2x = 40

x = 20 and y = 15

Answer 2

HEY FRIEND YOUR ANSWER IS HERE

Answer:

Number cows = 20

Step-by-step explanation:

Let number of cows be x

Let number of birds be y

ATQ,

x + y = 35 ---------(1)

4x + 2y = 110-------(2)

Multiply equation (1) by -2

-2x + (-2y) = (-70)

4x + 2y = 110

using elimination method,

2x = 40

x = 20

So number of cows will be 20

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