When all teachers in a school are made in rows of 64, 34 such rows are formed. If the teachers are made to stand in the rows of 32, how many such rows can be formed ?
If the ratio of male teachers to female teachers in a school is 2 : 5, find the total number of teachers in the school, if the number of female teachers in the school is 25.
If 55% of the teachers in a school are gents and the number of lady teachers in the school is 90, then the total number of techers in the school is
There are 20 teachers in a school of 500 students. The ratio of the number of teachers to the number of students is
The mean age of 25 teachers in a school is 40 years। A teacher retires at the age of 60 years and a new teacher is appointed in his place। If the mean age of the teachers in this school now is 39 years, then the age (in years) of the newly appointed teacher is_______ .
20 teachers of a school either teach mathematics or physics 12 of them mathematics while 4 teach both the subjects . The number of teachers teaching physics only ,is
The most important contribution of a teacher in a school is
