a generation is usually considered 20 years
Usually between 20-30
According to the accepted chronology, the average age of each generation; from Adam to Abraham, Luke: One hundred years. from Abraham to David, Matthew and Luke: Seventy years. from David to...
It should be about 20 years or so. Maybe 5 years less or more, depending on countries and epochs.
One generation is 25 years.
Approximately 250 years.