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)![]() ![]() ![]() You can put this solution on YOUR website! 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( "** \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 \n" ); document.write( " \n" ); document.write( " |