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)\"\" \"About 
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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
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