document.write( "Question 173394: ONE SMALL PIPE TAKES TWICE AS LONG TO FILL A TANK AS A LARGER PIPE DOES. IT TAKES THE TWO PIPES 40 MINUTES TO FILL THE TANK WHEN WORKING TOGETHER. HOW LONG WILL IT TAKE EACH PIPE INDIVIDUALLY TO FILL THE TANK? \n" ); document.write( "

Algebra.Com's Answer #128244 by Mathtut(3670) $\"\"$ $\"About$

You can put this solution on YOUR website!
rate for large pipe call 1/x and rate of small pipe 1/2x.
\n" ); document.write( ":
\n" ); document.write( " $\"%281%2Fx%29%2840%29%2B%281%2F2x%29%2840%29=1\"$
\n" ); document.write( ":
\n" ); document.write( " $\"%282%2840%29%2B40%29%2F2x=1\"$
\n" ); document.write( ":
\n" ); document.write( " $\"80%2B40=2x\"$
\n" ); document.write( ":
\n" ); document.write( " $\"2x=120\"$
\n" ); document.write( ":
\n" ); document.write( " $\"highlight%28x=60%29\"$ minutes for large pipe to fill tank alone
\n" ); document.write( ":
\n" ); document.write( " $\"highlight%282%2860%29=120%29\"$ minutes for small pipe to fill tank alone
\n" ); document.write( ":
\n" ); document.write( " \n" ); document.write( "

\n" );