In an election between two contestants, the total votes cast is 1890 and all are valid. If the winning candidate received 60% of the total votes, then the number of votes received by the losing candidate is:

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?