Mathematics · Data Interpretation

The table shows the distribution of teachers in Amba School in 2015: • Age 20-25: 2 teachers, 2 new appointments, 1 resignation • Age 25-30: 4 teachers, 1 new appointment, 0 resignations • Age 30-35: 7 teachers, 0 new appointments, 0 resignations • Age 35-40: 12 teachers, 1 new appointment, 2 resignations • Age 40-45: 11 teachers, 4 new appointments, 2 resignations • Age 45-50: 8 teachers, 0 new appointments, 0 resignations • Age 50-55: 5 teachers, 0 new appointments, 0 resignations • Age 55-60: 1 teacher, 1 new appointment, 1 resignation Appointments and resignations take place at the end of the year 2015. Find the number of teachers who are more than 30 years old but less than 45 years old at the end of the year.