From 2011 to 2014, a town's population increased at a rate of 2% annually. If its population was 13,265 in 2014, what would have been its approximate population in 2011?

In a town with 30,000 professionals, teachers make up 11% of the total professionals. If 46% of teachers are male, what is the number of female teachers in the town?

In a town's professional breakdown, doctors represent 18% and clerks represent 8% of the total professionals. If the number of doctors is 3000 greater than the number of clerks, what is the total number of professionals in the town?