document.write( "Question 908281: \"Find the time for two people working together to complete a task if it takes them 4.5 hours and 6 hours individually.\" \r
\n" ); document.write( "\n" ); document.write( "I tried working this problem out, but I had a hard time. I checked the solutions manual, but they used a random 27 in the equation somehow. Not I am just super confused! Thanks for your help!
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Algebra.Com's Answer #550934 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
27 is not random
\n" ); document.write( "4.5*6=27\r
\n" ); document.write( "\n" ); document.write( "1/a+1/b=1/x
\n" ); document.write( "1/4.5+1/6=1/x
\n" ); document.write( "6/27.0+4.5/27.0=1/x
\n" ); document.write( "10.5/27.0=1/x
\n" ); document.write( "x=27.0/10.5
\n" ); document.write( "x=2.57142857 hours working together
\n" ); document.write( "check
\n" ); document.write( "x/a+x/b=1
\n" ); document.write( "x/4.5+x/6=1
\n" ); document.write( "2.57142857/4.5+2.57142857/6=1
\n" ); document.write( "0.57142857+0.42857143=1
\n" ); document.write( "1.0=1
\n" ); document.write( "ok
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