Question 935223
Fill a Tank, uniform rates problem.
RT=J, for rate, time, job.  One tank filled is one job.
Sum of the individual rates is the combined rate for all agents working simultaneously.


{{{(1/12)+(1/6)}}}
{{{1/12+2/12}}}
{{{3/12}}}
{{{highlight(1/4)}}}, TANKSperHOUR; which means 4 hours to fill the tank.