Common Information

Study the bar chart and answer the questions.

Common Information Question: 1/4

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

500 units

1,000 units

5,000 units

18,000 units

Solution:Option(D) is correct

The required answer is got by $48,000 - 30,000 = 18,000$

Common Information Question: 2/4

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

1997 and 1998

1999 and 2000

Both option (A) and (B)

2001 and 2002

Solution:Option(C) is correct

The lowest rate of change for:

For year $1997$ and $1998$,

$= \left[\dfrac{48000 - 40000}{40000} × 100\right]\%$

$= 20\%$

For year $1999$ and $2000$,

$= \left[\dfrac{30000 - 25000}{25000} × 100\right]\%$

is exhibited by both option (A) and (B)

Common Information Question: 3/4

The sum of sales of cellular phones in the years 1999 and 2001 is equal to that in?

1997

1998

2000

2002

Solution:Option(A) is correct

The sum of sales in the two years is:

$=30,000 + 18,000 = 48,000$

which is the sales value for 1997

Common Information Question: 4/4

The percentage increases in sales from 2001 to 2002 was?

115%

128%

122%

118%

The percentage increase exhibited is:

$=\left[\dfrac{40 - 18}{18} × 100\right]\%$

= 122% approximately

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