Look at the histogram given below and answer the question that follow:
(i) What information is being given by the histogram?
(ii) How many teachers are of age less than 45 years?
(iii) How many teachers are of age 40 years or more but less than 55 years?
(i) The given histogram tells about the number of teachers in a school from the age group $25-30$ to $55-60$.
(ii) Number of teachers with age less than 45 years $=3+5+7+6=21$
(iii) Number of teachers with age more than 40 years but less than 55 years $=6+4+3=13$