document.write( "Question 1095561: a pool measuring 12 x 16 meters is surrounded by a path of uniform width. if the are of the pool and the path combined is 480 sq meters what is the width of the path? \n" ); document.write( "
Algebra.Com's Answer #710068 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let the width of the path = \"+x+\"
\n" ); document.write( "\"+%28+12+%2B+2x+%29%2A%28+16+%2B+2x+%29+=+480+\"
\n" ); document.write( "\"+192+%2B+32x+%2B+24x+%2B+4x%5E2+=+480+\"
\n" ); document.write( "\"+4x%5E2+%2B+56x+-+288+=+0+\"
\n" ); document.write( "\"+x%5E2+%2B+14x+-+72+=+0+\"
\n" ); document.write( "\"+%28+x+%2B+18+%29%2A%28+x+-+4+%29+=+0+\"
\n" ); document.write( "\"+x+=+4+\" ( can't use \"+x+=+-18\" )
\n" ); document.write( "-------------------------------------
\n" ); document.write( "The path is 4 m wide
\n" ); document.write( "---------------------------
\n" ); document.write( "check:
\n" ); document.write( "\"+%28+12+%2B+2%2A4+%29%2A%28+16+%2B+2%2A4+%29+=+480+\"
\n" ); document.write( "\"+20%2A24+=+480+\"
\n" ); document.write( "\"+480+=+480+\"
\n" ); document.write( "OK\r
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