a dentist has 405 male and female patients that range in ages from 10 to 50 years old and up. there are 41 males and 35 female in the range of 10-21. 34 males and 46 females from the range of 40-50. and 55 males and 74 females in the range 50 and up. what is the experimental probability that the next patient will be female and in the age range of 22-39 in a simplified fraction?