Question 1127794
First Team,  {{{1/(2x)}}}  {{{Projects/Days}}}


Second Team,  {{{1/(3x)}}} {{{Projects/Days}}}


{{{1/(2x)+1/(3x)=1/6}}}

-

{{{3+2=x}}}


{{{x=5}}}



First Team needs 10 days working alone.
Second Team needs 15 days working alone.