document.write( "Question 584833: If Sammy can mow a lawn in 3 hours and Laura can mow the same lawn in 4 hours, how long will it take them if they work together? \n" ); document.write( "
Algebra.Com's Answer #372905 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
x/3+x/4=1
\n" ); document.write( "4x+3x=12
\n" ); document.write( "7x=12
\n" ); document.write( "x=12/7 =1 5/7 hrs
\n" ); document.write( "about 1 hr 43 minutes
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