document.write( "Question 795267: If it takes one person 15 minutes to paint a room and another person 45 mintues topaint the same room, how long will it take if they work together? \n" ); document.write( "
Algebra.Com's Answer #480877 by Cromlix(4381)\"\" \"About 
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One person can paint a room in 15 minutes.
\n" ); document.write( "Another person can paint the same room in 45 minutes.
\n" ); document.write( "One person's rate = 1/15 job/min
\n" ); document.write( "Another person's rate = 1/45 job/min
\n" ); document.write( "Together rate = 1/x job/min\r
\n" ); document.write( "\n" ); document.write( "1/15 + 1/45 = 1/x
\n" ); document.write( "Common denominator = 675x
\n" ); document.write( "45x + 15x = 675
\n" ); document.write( "60x = 675
\n" ); document.write( "x = 11.25 minutes
\n" ); document.write( "x = 11 minutes and 15 seconds.
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-)
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