document.write( "Question 411440: A large pipe can fill a tank in 10 minutes, and a smaller pipe can fill the tank in 20 minutes. How long will it take to fill the tank if the both pipes are used at the same time?\r
\n" );
document.write( "\n" );
document.write( "Thank you,
\n" );
document.write( " --Nienyotza \n" );
document.write( "
Algebra.Com's Answer #289200 by sudhanshu_kmr(1152)![]() ![]() You can put this solution on YOUR website! if both pipes are used then in one minute tank will fill ( 1/10 - 1/20 ) portion\r \n" ); document.write( "\n" ); document.write( "it is 1/20 portion...\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "as 1/20 portion of tank fill in 1 minute.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, for 1 complete portion 1 / (1/20) = 20 \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, 20 minutes..... \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |