Question

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	$1lakh60thousands$	$1\ lakh\ 20\ thousands	$1\ lakh\ 20\ thousands	$80thousands$	$40thousands$

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

Answer 1

By taking a scale of $1$ unit length $20$ thousands, a bar graph of the above given data can be drawn as follows.
(a) $30-44$ and $45-59$ are the two age groups which have the same population.
(b) It can be inferred that senior Citizens are the people who are either from age group $60-74$ or from age group $75$ and above. Hence, number of senior citizens $=80,000+40,000=1lakh20thousand$.