document.write( "Question 611009: Hose A can fill a water tank in 14 hours, while Hose B can fill the same tank in 20 hours. How long will it take to fill the tank if both hoses are used? This needs to be written as a linear equation.\r
\n" );
document.write( "\n" );
document.write( "What I have tried:\r
\n" );
document.write( "\n" );
document.write( "X= Hose A which fills 1/14 of the tank in an hour
\n" );
document.write( "Y= Hose B which fills 1/20 of the tank in an hour\r
\n" );
document.write( "\n" );
document.write( "X+Y= (14+20)/20*14= 34/280= 17/140\r
\n" );
document.write( "\n" );
document.write( "This is as far as I got but my answer would be 17 hours which is incorrect.\r
\n" );
document.write( "\n" );
document.write( "Thank you
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #384703 by stanbon(75887) ![]() You can put this solution on YOUR website! Hose A can fill a water tank in 14 hours, while Hose B can fill the same tank in 20 hours. How long will it take to fill the tank if both hoses are used? This needs to be written as a linear equation. \n" ); document.write( "------ \n" ); document.write( "A rate = 1/14 job/hr \n" ); document.write( "B rate = 1/20 job/hr \n" ); document.write( "Together rate = 1/x job/hr \n" ); document.write( "------ \n" ); document.write( "Equation: \n" ); document.write( "rate + rate = together rate \n" ); document.write( "1/14 + 1/20 = 1/x \n" ); document.write( "20x + 14x = 14*20 \n" ); document.write( "34x = 280 \n" ); document.write( "x = 8.24 hrs. = 8 hrs 14 minutes \n" ); document.write( "======================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=================== \n" ); document.write( " |