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

If 56 men can do a piece of work in 42 days. How many men will do it in 14 days?

If 56 men can do a piece of work in 42 days. How many men will do it in 14 days?

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?

36 men can do a piece of work in 12 days. In how many days 9 men can do the same work?