Question 192057
john can do 2/9 of the job per hour
Laura can do 1/2 of the job per hour
:
together:
:
{{{(1/2+2/9)t=1}}}
:
{{{(9/18+4/18)t=1}}}
:
{{{(13/18)t=1}}}
:
t=18/13 of an hour