Question 478785
In 1 day 5 men do {{{1/120}}}part of job, so in 1 day 1 man does {{{(1/120)/5=1/600}}} part of job, then 3 men will do in 1 day {{{3*(1/600)=1/200}}} part of job, then all job they will do in {{{1/(1/200)=200}}} days