एक चुनाव में कुल 7,50,000 मतदाताओं ने भाग लिया। एक उम्मीदवार को 3,82,500 वोट मिले, जो कुल वैध वोटों का 60% था। चुनाव में अवैध वोटों का प्रतिशत कितना था?

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?