Two candidates contested a parliamentary election. The winning candidate secured 57% of the total valid votes polled and won by a majority of 42,000 votes. What is the total number of valid votes polled?

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?