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There are (c) chickens and (h) horses, so c + h = 91

Each chicken has 2 legs, each horse has 4 legs, so 2c + 4h = 246

The quick way to solve this is to multiply the first equation by 2, then subtract it from the second equation - this eliminates the terms involving "c".

2c + 4h = 246

2c + 2h = 182

........2h = 64 : h = 32, so c = 91 - 32 = 59

There are 59 chickens on the farm (and 32 horses).

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Q: On a farm there are chickens and horses There are total of 91 heads and 246 legs How many chickens are on the farm?
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