document.write( "Question 373010: one pipe fills a pool in 6 hours. a second pipe can fill the same pool in 4 hours. how long would it take to fill the pool if both pipes were working \n" ); document.write( "
Algebra.Com's Answer #265605 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
they each fill some FRACTION of the pool , based on their individual times
\n" ); document.write( "the fractions add to one (the WHOLE pool)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(x / 6) + (x / 4) = 1\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "multiplying by 12 (the LCD) ___ 2x + 3x = 12
\n" ); document.write( "
\n" );