document.write( "Question 417564: A farmer has 60 cows, pigs, and horses. There are 4 times as many cows and pigs than they are horses. How many horses are there? \n" ); document.write( "

Algebra.Com's Answer #292306 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"a\"$ = number of horses
\n" ); document.write( "Let $\"b\"$ = number of cows and pigs
\n" ); document.write( "given:
\n" ); document.write( " $\"a+%2B+b+=+60\"$
\n" ); document.write( " $\"+b+=+4a+\"$
\n" ); document.write( "-----------
\n" ); document.write( " $\"+a+%2B+4a+=+60\"$
\n" ); document.write( " $\"5a+=+60\"$
\n" ); document.write( " $\"a+=+12\"$
\n" ); document.write( "There are 12 horses
\n" ); document.write( " \n" ); document.write( "

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