Question 188926
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Bill: 1 Room / 8 hours
Ed: 1 Room / <font color=red>x </font>hours


Both Bill + Ed : 1 Room / 6 hours


Putting into Eqn:


Bill + Ed = Both
{{{1/8+1/x=1/6}}}
{{{1/x=1/6-1/8=(8-6)/48=2/48}}}, cross multiply
{{{2x=48}}} ---> {{{cross(2)x/cross(2)=cross(48)24/cross(2)}}}
{{{highlight(x=24hrs)}}}, time for Ed to paint the room


Check,
{{{1/8+1/24=1/6}}}
{{{(3+1)/24=1/6}}}
{{{4/24=1/6}}}
{{{1/6=1/6}}}


Thank you,
Jojo</font>