Question 1006778
RT=J relating rate, time, amount of job


Each man works at the same rate r.
Time for the 16 men is t days.
{{{system(12r*9=1,16*rt=1)}}}


Both of those are for 1 job.
{{{12r*9=16rt}}}
{{{3r*9=4rt}}}
{{{27=4t}}}
{{{t=27/4}}}


{{{(6&3/4)days}}}