document.write( "Question 629092: Jack usually mows his lawn in 7 hours. Marilyn can mow the same yard in 6 hours. How much time would it take for them to mow the lawn together?\r
\n" ); document.write( "\n" ); document.write( "They could mow the lawn in _____ hours if they worked together. (simplify your answer)
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Algebra.Com's Answer #396017 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Add their rates of working
\n" ); document.write( "( 1 lawn / 7 hrs ) + ( 1 lawn / 6 hrs ) = ( 1 lawn / x hrs )
\n" ); document.write( "\"+1%2F7+%2B+1%2F6+=+1%2Fx+\"
\n" ); document.write( "Multiply both sides by \"+42x+\"
\n" ); document.write( "\"+6x+%2B+7x+=+42+\"
\n" ); document.write( "\"+13x+=+42+\"
\n" ); document.write( "\"+x+=+3+%2B+3%2F42+\"
\n" ); document.write( "\"+3%2F42+=+1%2F14+\"
\n" ); document.write( "\"+%281%2F14%29%2A60+=+4.2857+\"
\n" ); document.write( "\"+.2857%2A60+=+17.14+\"
\n" ); document.write( "They could mow the lawn in 3 hours 4 minutes and 17 seconds if they worked together.
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