Question

The following bar graph shows the number of persons killed in industrial accidents in a country for some years (Fig.23.23)


Read the bar graph and choose the correct alternative in each of the following:

(i) The year which shows the maximum percentage increase in the number of persons killed in coal mines over the precending year is:
(a) 1996
(b) 1997
(c) 1999
(d) 2000

(ii) The year which shows the maximum decrease in the number of persons killed in industrial accidents over the precending year is:
(a) 1996
(b) 1997
(c) 1998
(d) 1999

(iii) The year in which the maximum number of persons were killed in industrial accidents other than those killed in coal mines is
(a) 1995
(b) 1997
(c) 1998
(d) 1999

Answer 1

Let's draw a chart using the information from the above bar graph:

Year	Persons killed in industrial accidents	Persons killed in coal mines
1995	1600	300
1996	900	200
1997	1200	300
1998	1300	100
1999	900	100
2000	1300	200

(i) (d) 2000
Explanation: In 1997, the death increased to 300 from 200, and in 2000, the death increased to 200 from 100.
Therefore, percentage increase in the amount of death in coal mines in the year 1997 ⇒ from 200 to 300 ⇒ 50% increase
Therefore, percentage increase in the amount of death in coal mines in the year 2000 ⇒ from 100 to 200 ⇒ 100% increase

(ii) (a) 1996
Explanation: Both the years, 1996 and in 1999, show a decrease in the amount of persons killed by industrial accidents.
Therefore, percentage decrease in the amount of death due to industrial accidents in the year 1996 ⇒ from 1600 to 900 ⇒ 43.75%
Therefore, percentage decrease in the amount of death due to industrial accidents in the year 1999 ⇒ from 1300 to 1900 ⇒ 30.77%

(iii) (a) 1995
Explanation: In the year 1995, 1600 persons were killed by industrial accidents, which is the highest compared to the other years.