document.write( "Question 439278: IN A PEN OF GOATS AND CHICKENS, THERE ARE 40 HEADS AND 130 FEET. HOW MANY GOATS AND CHICKENS ARE IN THE PEN?? \n" ); document.write( "

Algebra.Com's Answer #303539 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "let's GOATS be $\"x\"$
\n" ); document.write( "and
\n" ); document.write( "CHICKENS be $\"y\"$
\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "there are $\"40\"$ HEADS....-> $\"40=x%2By\"$ .........1\r
\n" ); document.write( "\n" ); document.write( " $\"130\"$ FEET....-> $\"130+=4x%2B2y\"$ ................2\r
\n" ); document.write( "\n" ); document.write( " $\"40=x%2By+\"$ .........1
\n" ); document.write( " $\"130+=4x%2B2y\"$ ......2
\n" ); document.write( "---------------------solve the system\r
\n" ); document.write( "\n" ); document.write( " $\"40=x%2By\"$ ....-> $\"x=40-y\"$ .......substitute in 2\r
\n" ); document.write( "\n" ); document.write( " $\"130+=4%2840-y%29%2B2y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"130+=+160-4y%2B2y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"130-160+=-y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"-30+=-2y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2y=30\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=15\"$ .............CHICKENS\r
\n" ); document.write( "\n" ); document.write( " $\"x=40-15\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=25\"$ .............GOATS\r
\n" ); document.write( "
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