question_answer 16)

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?

Answer:

                (i) Number of books sold in 1989 = 175 (approx.) Number of books sold in 1990 = 475 (approx.) Number of books sold in 1992 = 225 (approx.) (ii) About 475 were sold in the year 1990. About 225 books were sold in the year 1992. (iii) Fewer than 250 books were sold in the years 1989 and 1992. (iv) Length of the bar corresponding to 1989 is about 1.75 cm. The scale is 1 cm = 100 books. So, the number of books estimated to be sold in \[\text{1989}=\text{1}.\text{75}\times \text{1}00=\text{175}\].