document.write( "Question 940954: A modern pump can empty a tank three times as fast as another. If both pumps work together, these can complete the job in 4hours. Find the rate of each pump. \n" ); document.write( "

Algebra.Com's Answer #573571 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+R+\"$ = the rate of the slow pump
\n" ); document.write( " $\"+3R+\"$ = the rate of the fast pump
\n" ); document.write( " $\"+R+%2B+3R+=+1%2F4+\"$
\n" ); document.write( " $\"+4R+=+1%2F4+\"$
\n" ); document.write( " $\"+R+=+1%2F16+\"$
\n" ); document.write( " $\"+3R+=+3%2F16+\"$
\n" ); document.write( "--------------
\n" ); document.write( "The slow pump's rate is ( 1 tank ) / ( 16 hrs )
\n" ); document.write( "The fast pump's rate is $\"+3%2F16+\"$ = ( 1 tank ) / ( 5 hrs 20 min )
\n" ); document.write( "( not that 5 hrs 20 min = $\"+16%2F3+=+5.333+\"$ hrs
\n" ); document.write( " \n" ); document.write( "

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