document.write( "Question 811438: it takes 6.5 hours to fill a large tank with oil using Pipe a. using both pipe a and b, the same tank can be filled in 3.5 hours. At what rate is pipe b filling the tank? \n" ); document.write( "
Algebra.Com's Answer #488737 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
3.5/6.5+3.5/b=1
\n" ); document.write( "7/13+3.5/b=1
\n" ); document.write( "3.5/b = 6/13
\n" ); document.write( "b= 7.58333 \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );