document.write( "Question 1020353: Carpenter A can build a chair in 6 hours while carpenter B can build the same chair in 9 hours. If Carpenter A starts working on a chair for two hours and then carpenter B joins him, how long will take for the two of them to finish the rest of the job? And. 12/5 hours. \n" ); document.write( "
Algebra.Com's Answer #636265 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! What fraction of the job does A \n" ); document.write( "get done in 2 hrs? \n" ); document.write( "----------------- \n" ); document.write( "A's rate of working: \n" ); document.write( "[ 1 chair ] / [ 6 hrs ] \n" ); document.write( " \n" ); document.write( "That means 2/3 of the chair remains \n" ); document.write( "to be built \n" ); document.write( "----------------- \n" ); document.write( "B's rate of working: \n" ); document.write( "[ 1 chair ] / [ 9 hrs ] \n" ); document.write( "Let \n" ); document.write( "finish the chair working together \n" ); document.write( "----------------------------- \n" ); document.write( "Add their rates of working to get \n" ); document.write( "rate working together \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Multiply both sides by \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "------------------ \n" ); document.write( "check answer: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "OK \n" ); document.write( " |