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Number of persons in various age groups in a town are represented by a bar graph. If all persons in the age group of 60 and above are called senior citizens. How many senior citizens are there in the town? Also find the two age groups who have the same population.

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Solution

Senior citizens are the persons between the age group of either 60-74 or from 75 above.
Therefore, Number of senior citizens in the town = 80000 + 40000
= 1 lakh 20 thousand
Hence, the number of senior citizens in the town are 1 lakh 20 thousand.
On observing the given bar graph,
30-44 and 45 – 59 are the two age groups with the same population, that is 12,000 people.

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Q. Number of persons in various age groups in a town is given in the following table.

(a) Draw a bar graph to represent the above information and answer the following questions
(b) All persons in the age group of 60 and above are called senior citizens. How many senior citizens are there in the town ?

Q. Number of persons in various age groups in a town is given in the following table.

\begin{matrix} Age & 1 - 14 & 15 - 29 & 30 - 44 & 45 - 59 & 60 - 74 & 75 and group & above (in years) Number & 2 lakhs & 1 lakh 60 & 1 lakh 20 & 1 lakh 20 & 80 & 40 of persons & thousands & thousands & thousands & thousands & thousands & thousands \end{matrix}

Draw a bar graph to represent the above information and answer the following questions :
a) Which two age groups have the same population?
b) All persons in the age group of 60 and above are called senior citizens. How many senior citizens are there in the town?

Q. Number of persons in various age groups in a town is given in the following table.

Age group (in years)	$1 - 14$	$15 - 29$	$30 - 44$	$45 - 59$	$60 - 74$	$75$ and above
Number of persons	$2$ lakhs	$1 l a k h 60 t h o u s a n d s$	$1\ lakh\ 20\ thousands	$1\ lakh\ 20\ thousands	$80 t h o u s a n d s$	$40 t h o u s a n d s$

Draw a bar graph to represent the above information and answer the following question. (take

1

= 20 t h o u s a n d s)

(a) Which two age groups have same population?
(b) All persons in the age group of

60

and above are called senior citizens. How many senior citizens are there in the town

The bar graph represents the number of persons in various age groups in a town. The total population of the town is

Q. 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) How many persons are more 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-group 50-55?

(vii) What is the total number of persons living in the town in the age-groups 10-15 and 60-65?

(vii) Whether the population in general increases, decreases or remains constant with the increase in the age-group.

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