document.write( "Question 734810: A man can dig a ditch in 3 hours and his daughter can dig the same size ditch in 5 hours. Working together, how long will it take them to dig the ditch? \n" ); document.write( "
Algebra.Com's Answer #449158 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! 1/3+1/5=1/X \n" ); document.write( "(5+3)/3*5=1/X \n" ); document.write( "8/15=1/X CROSS MULTIPLY. \n" ); document.write( "8X=15 \n" ); document.write( "X=15/8 \n" ); document.write( "X=1.875 HOURS WORKING TOGETHER. \n" ); document.write( " |