document.write( "Question 909812: help plz and solution. A can do a piece of work in 4 1/2 days. After he has worked three days, B joined him and they finished the work in 1 7/8 days. How long can B do the work alone? \n" ); document.write( "
Algebra.Com's Answer #552836 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! One worker works alone for 3/x days \n" ); document.write( "Two workers work together for 1.875/x days and 1.875/4.5 days since he can do the job alone in 4.5 days \n" ); document.write( "One worker worked 1.875 days with his partner and 3 days alone for a total of 4.875 days \n" ); document.write( "3/x+1.875/x+1.875/4.5=1 \n" ); document.write( "4.875/x+1.875/4.5=1 \n" ); document.write( "4.875/x+=1-1.875/4.5 \n" ); document.write( "4.875/x+=0.58333333 \n" ); document.write( "4.875=0.58333333*x \n" ); document.write( "4.875/0.58333333=x \n" ); document.write( "x=8.35714286 days if he had done the job alone \n" ); document.write( "check \n" ); document.write( "3/8.35714286+1.875/8.35714286+1.875/4.5=1 \n" ); document.write( "0.35897436+0.22435897+0.41666667=1 \n" ); document.write( "1.0=1 \n" ); document.write( "ok \n" ); document.write( "codewtet3 \n" ); document.write( " \n" ); document.write( " |