**Directions:**

Study the following bar chart to answer the questions.

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1.

The difference in the sales of cellular phones for the years 1997 and 1999 is_______

A) 500 units

B) 1,000 units

C) 5,000 units

D) 18,000 units

2.

The two years between which the rate of change of cellular phones is minimum are :

A) 1997 and 1998

B) 1999 and 2000

C) Both land 2

D) 2001 and 2002

3.

The sum of sales of cellular phones in the year 1999 and 2001 is equal to that is_______

A) 1997

B) 1998

C) 2000

D) 2002

4.

The percentage increase in sales from 2001 to 2002 was

A) 115%

B) 128%

C) 122%

D) 118%

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