Read the bar graph which shows the number of books sold by a bookstore during five consecutive years and answer the following questions:
(i) About how many books were sold in 1989? 1990? 1992?
(ii) In which year were about 475 books sold? About 225 books sold?
(iii) In which years were fewer than 250 books sold?
(iv) Can you explain how you would estimate the number of books sold in 1989?
(i) Here
We can say that,
While observing the graph,
The total books sold in the year 1989, 1990 and 1992 are as follows:
Number of books sold in 1989 = 175
And,
Number of books sold in 1992 = 225
And,
Number of books sold in 1990 = 475
(ii) Here,
We have to find,
The year in which the following number of books were sold:
475
And,
225
Hence,
While observing the graph,
We can say that,
475 books were sold in the year 1990
And,
225 books were sold in the year 1992
(iii) Here,
We have to find,
The years in which the books sold were less than 250 books
Hence,
While observing the graph,
We can conclude that,
The years in which the total number of books sold was less than 250 are as follows:
The year 1989
And
The year 1992
(iv) Now,
According to the question,
From the graph,
We can conclude that,
The number of books sold in the year 1989 is about 1 and 
th part of 1 cm.
Now,
We know that,
The scale here is:
1cm = 100 books
Hence,
100 + 
th × 100
= 100 + 75
= 75
Thus,
About 175 books were sold in the year 1989.