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)![]() ![]() 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:-) \n" ); document.write( " |