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andrey2020 [161]
4 years ago
15

Farmer Johnson raises cows and chickens. For some reason he does not remember how many of each

Mathematics
2 answers:
icang [17]4 years ago
5 0

Answer:

Step-by-step explanation:

Let the number of cows = x

Let the number of chickens = y

4x + 2y = 140

x + y = 54

Multiply the second equation by 2

2x + 2y = 108

Now write the new equation under the first equation and subtract.

4x + 2y = 140

<u>2x + 2y = 108</u>      Subtract

2x = 32                Divide by 2

x = 32/2

x = 16

There are 16 cows and 38 chickens.

Check

16 * 4  =   64

38 * 2 =  <u> 76</u>

Total      140

posledela4 years ago
4 0
There are 38 chickens and 16 cows.
38 times 2 equals 76 and 16 times 4 equals 64. 64 plus 76 equals 140.
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