Question 126009
In words:
(1 job/8 days) + (1 job/5 days) = 1 job/x days
{{{1/8 + 1/5 = 1/x}}}
multiply both sides by 40
{{{5 + 8 = 40/x}}}
{{{13x = 40}}}
{{{x = 3.077}}}days answer