The number of hours spent by a child on different activities in a 24-hour day is given below. What percentage of his time did he spend sleeping? - School: 8 hours - Play: 3 hours - Sleep: 8 hours - Eat: 2 hours - Music: 3 hours - Total: 24 hours

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?