document.write( "Question 613715: If it takes Bob 3 hours to paint a room and Linda 5 hours to paint a room, how long will it take them to paint the room together? \n" ); document.write( "
Algebra.Com's Answer #386198 by lwsshak3(11628)\"\" \"About 
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If it takes Bob 3 hours to paint a room and Linda 5 hours to paint a room, how long will it take them to paint the room together?
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\n" ); document.write( "let x=Hours Bob and Linda will take to paint the room together
\n" ); document.write( "Bob's work rate=1/3
\n" ); document.write( "Linda's work rate=1/5
\n" ); document.write( "Work rate working together=1/x
\n" ); document.write( "sum of individual work rates=work rate working together
\n" ); document.write( "1/3+1/5=1/x
\n" ); document.write( "x/3+x/5=1
\n" ); document.write( "LCD:15
\n" ); document.write( "5x+3x=15
\n" ); document.write( "8x=15
\n" ); document.write( "x=15/8
\n" ); document.write( "ans:
\n" ); document.write( "Hours Bob and Linda will take to paint the room together=15/8
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