Question 598229
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There are twenty-seven animals in a barn. Some are chickens some are cows. There are 90 legs in all. How many of each animal are in the barn?
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See also the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/word/misc/Problem-on-animals-at-a-farm.lesson>Problem on animals at a farm</A>

in this site, where similar problem was solved.