document.write( "Question 977339: Martha can rake leaves in her yard in 8 hours. Her brother can rake leaves in 4 hours. How long will it take both of them to rake the one yard? \n" ); document.write( "
Algebra.Com's Answer #598891 by Cromlix(4381)\"\" \"About 
You can put this solution on YOUR website!
Hi there,
\n" ); document.write( "1/a + 1/b = 1/x
\n" ); document.write( "1/8 + 1/4 = 1/x
\n" ); document.write( "3/8 = 1/x
\n" ); document.write( "8/3 = x
\n" ); document.write( "x = 2.67 hours (2 decimal places)
\n" ); document.write( "Hope this helps:-)
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