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

Draw a bar graph to represent the above information and answer the following questions. (take 1 unit length = 20 thousands)
(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?

Solution:

We use the concept of data handling to answer the given questions.

From the information given in the question, we may draw a bar graph as follows

Taking a scale of 1 unit length = 100 bicycles, we draw a bar graph representing the given data as follows.

(a) 30-44 and 45-59 are the two age groups that have the same population as can be seen in the graph.

(b) All persons in the age group of 60 and above are called senior citizens.

Therefore,

Total number of senior citizens in the town = Citizens between the age group from 60-74 + Citizens having the age group 75 and above

= 80000 + 40000

= 1 lakh 20 thousand

The total number of senior citizens in the town is 1 lakh 20 thousand.

NCERT Solutions for Class 6 Maths Chapter 9 Exercise 9.4 Question 4

Number of persons in various age groups in a town is given in the following table. Draw a bar graph to represent the above information and answer the following questions. (take 1 unit length = 20 thousands) (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?

Summary:

Using the concept of data handling and by analyzing the graph, it can be concluded that 30-44 and 45-59 are two age groups which have the same population and the number of senior citizens in the town is 1 lakh 20 thousand.

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