document.write( "Question 828316: Shawn and Ellie are construction workers. Shawn can complete a concrete job in 4 hours, while Ellie can complete it in 6 hours. The foreman says that it will take them 5 hours to complete it if they work together. Explain each step in solving this equation and determine if the the Foreman is correct or not. \n" ); document.write( "
Algebra.Com's Answer #499231 by josmiceli(19441)\"\" \"About 
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Shawn's rate is ( 1 job ) / ( 4 hrs )
\n" ); document.write( "Ellie's rate is ( 1 job ) / ( 6 hrs )
\n" ); document.write( "Let \"+t+\" = time for them to do the job together
\n" ); document.write( "\"+1%2F4+%2B+1%2F6+=+1%2Ft+\"
\n" ); document.write( "Multiply both sides by \"+12t+\"
\n" ); document.write( "\"+3t+%2B+2t+=+12+\"
\n" ); document.write( "\"+5t+=+12+\"
\n" ); document.write( "\"+t+=+2.4+\" hrs
\n" ); document.write( "The foreman is wrong
\n" ); document.write( "
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