80 seconds

From ATV:

There's a study in the U.S. said that it takes an average of 80 seconds for a lady to go to toilet. It is around double the time required for a man. However, in HK, the capacity of toilets in both public and private premises is around the same for men and women. The TV program said that it's a kind of implicit discrimination. The situation will get worse as the ratio of female in the population is increasing.