[" 20.If "16" men or "20" women can do a piece of work in "25],[" days,in what time will "28" men and "15" women do it? "]

If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?

If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?

If 12 men or 18 women can do a piece of work in 14 days, then how long will 8 men and 16 women take to finish the work ?

If 5 men or 9 women can do a piece of work in 19 days,then in how many days will 3 men and 6 women do the same work? 12 b.15 c.backslash18 d.21

If 52 men can do a piece of work in 35 days in how many days 28 men will do it ?

If 12 women can do a piece of work in 9 days, in how many days can 18 women do it ?

If 3 men or 6 women can do a piece of work in 16 days, in how many days can 12 men and 8 women do the same piece of work?

If 12 men or 18 women can do a work in 14 days,then in how many days will 8 men and 16 women do the same work?