<PRE><B>Question 1083166</B>
takes Ned x hours
takes Fred (2/3)x hours
in 1 hour, Ned does 1/x
in 1 hour, Fred does 1/(2/3)x or 3x/2
together they do it in 3.5 hours
(3.5/x)+(7/2/(2x/3)=1=(3.5/x)+(21/4x)
multiply by 4x
14+21=4x
4x=35
x=8.75 hours Ned  ANSWER
(2x/3)=5.83 hours Fred
In 3.5 hours, Ned does 0.4
In 3.5 hours, Fred does 0.6









</PRE>