If 15 men can do a piece of work in 20 days, in how many days can 25 men finish the same work?

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

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

If 45 men can do a piece of work in 49 days, in how many days will 35 men do it?

If 40 men can finish a piece of work in 60 days. In how many days will 75 , men finish the same work ?

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

7 men can complete a work in 52 days. In how many days will 13 men finish the same work.

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 4 men or 7 women can do a work in 60 days, then in how many days will 8 men and 7 women finish the same work?