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There are 50 animals on the farm. There are 30 cows on a farm and a number of chickens and horses. When the farmer trades away as many cows as there are horses, there are an equal number of cows to chickens and horses. Now how many cows, chickens, and horses are there?

 Jul 18, 2022
edited by Guest  Jul 18, 2022
edited by Guest  Jul 18, 2022
 #1
avatar+124676 
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Let the number of cows = 30

Let the number of chickens = x

Let the number of horses =  50 - 30 - x =  20 - x

 

When he trades away  as many cows as horses he has   30 - (20- x)  =  10 + x cows left

 

So 

 

10 + x =  x + (20 - x)

 

10 + x =  20

 

x =10

 

So   he now has  10 +  x = 10 + 10 =  20 cows left

 

And the number of  chickens and horses =    x  + 20 - x  =   10 + 20 - 10  =   20 

 

And the number of  cows =  the number of  chickens and horses

 

 

cool cool cool

 Jul 18, 2022

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