Study the bar graph representing the number of persons in various age groups in a town shown in Fig 23.9. Observe the bar graph and answer the following questions:
(i) What is the percentage of the youngest age-group persons over those in the oldest age group?
(ii) What is the total population of the town?
(iii) What is the number of persons in the age-group 60−65?
(iv) What is the number of persons in the age-group 10−15 than in the age group 30−35?
(v) What is the age-group of exactly 1200 persons living in the town?
(vi) What is the total number of persons living in the town in the age 50−55?
(vii) What is the total number of persons living in the town in the age-groups 10−15 and 60−65?
(viii) Whether the population in general increases, decreases of remains constant with the increase in the age-group.