document.write( "Question 726340: A tank can be filled in 18hours by \"pump A\" or in 24 hours by \"pump B\" how long will it take to take both pumps working together to fill the tank.... will you please help me with this?? \n" ); document.write( "
Algebra.Com's Answer #444564 by mananth(16946)\"\" \"About 
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In this problem filling the tank is 1 job\r
\n" ); document.write( "\n" ); document.write( "Pump A takes 18 hours.
\n" ); document.write( "so it does 1/18 of the job in 1 hour\r
\n" ); document.write( "\n" ); document.write( "similarly Pump B does 1/24 of the job in 1hour\r
\n" ); document.write( "\n" ); document.write( "together they do \"1%2F18+%2B+1%2F24+\" of the job in 1 hour\r
\n" ); document.write( "\n" ); document.write( "=7/72 of the job in 1 hour\r
\n" ); document.write( "\n" ); document.write( "so they will take 72/7 hours to do the job together\r
\n" ); document.write( "\n" ); document.write( "10.38 hours
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