document.write( "Question 148739: A plumber can install a dishwasher in 50 minutes. If the plumber brings his apprentice to help, the job takes 40 minutes. How long would it take the apprentice working alone to install the dishwasher? \n" ); document.write( "
Algebra.Com's Answer #109067 by oscargut(2103)\"\" \"About 
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In 40 minutes the plumber does 40/50 =0.8 of the work
\n" ); document.write( "so the apprentice does 0.2 of the work (20%)
\n" ); document.write( "then in 40 min does 20%
\n" ); document.write( "so 100% of the work is done in 200 min\r
\n" ); document.write( "\n" ); document.write( "Answer: 200 min
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