(i) About how many books were sold in 1989 ?1990 ? 1992 ?

Question

Read the bar graph (Fig) which shows the number of books sold by a bookstore during five consecutive years and 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 would estimate the number of books sold in 1989 ?

Answer 1

(i)

Number of books sold in 1989 =180 books approximately.
Number of books sold in 1990 = 475 books approximately.
Number of books sold in 1992 = 225 books approximately.

(ii)

Approximately 475 books sold in 1990.
Approximately 225 books sold in 1992.

(iii) Less than 250 books sold in the year = 1989 and 1992.

(iv) The length of bar graph of 1989 is about 1.8cm.
The scale 1cm = 100 books. So number of books = 1.8 × 100 = 180 books