document.write( "Question 970260: Working together, two pumps can drain a certain pool in 6 hours. If it takes the older pump 15 hours to drain the pool by itself, how long will it take the newer pump to drain the pool on its own? \n" ); document.write( "
Algebra.Com's Answer #592902 by josmiceli(19441) You can put this solution on YOUR website! Add the pumping rates of the 2 pumps \n" ); document.write( "to get their rate working together \n" ); document.write( "Rate for older pump: \n" ); document.write( "[ 1 pool drained ] / [ 15 hrs ] \n" ); document.write( "Rate for newer pump: \n" ); document.write( "[ 1 pool drained ] / [ t hrs ] \n" ); document.write( "Rate working together: \n" ); document.write( "[ 1 pool drained ] / [ 6 hrs ] \n" ); document.write( "---------------------------- \n" ); document.write( " \n" ); document.write( "Multiply both sides by \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "The newer pump can drain the pool in \n" ); document.write( "10 hrs working on it's own \n" ); document.write( "------------------------- \n" ); document.write( "check: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "OK \n" ); document.write( " \n" ); document.write( " |