table charts



The following table gives the sales of batteries manufactured by a company over the years.
Number of Different Types of Batteries Sold by a Company Over the Years (Numbers in Thousands)
Year Types of Batteries
4AH 7AH 32AH 35AH 55AH Total
1992 75 144 114 102 108 543
1993 90 126 102 84 126 528
1994 96 114 75 105 135 525
1995 105 90 150 90 75 510
1996 90 75 135 75 90 465
1997 105 60 165 45 120 495
1998 115 85 160 100 145 605

1).
What was the approximate percentage increase in the sales of 55AH batteries in 1998 compared to that in 1992?
A   28%   
B   31%   
C   33%   
D   34%   
ANS: D - 34%

Required percentage
= [ (145 - 108)   x 100 ] %
108
  = 34.26%
  ~= 34%.

2).
The total sales of all the seven years is the maximum for which battery?
A   4AH   
B   7AH   
C   32AH   
D   35AH   
ANS: C - 32AH

The total sales (in thousands) of all the seven years for various batteries are:
For 4AH = 75 + 90 + 96 + 105 + 90 + 105 + 115 = 676
For 7AH = 144 + 126 + 114 + 90 + 75 + 60 + 85 = 694
For 32AH = 114 + 102 + 75 + 150 + 135 + 165 + 160 = 901
For 35AH = 102 + 84 + 105 + 90 + 75 + 45 + 100 = 601
For 55AH = 108 + 126 + 135 + 75 + 90 + 120 + 145 = 799.
Clearly, sales are maximum in case of 32AH batteries.

3).
What is the difference in the number of 35AH batteries sold in 1993 and 1997?
A   24000   
B   28000   
C   35000   
D   39000   
ANS: D - 39000

Required difference = [(84 - 45) x 1000] = 39000.

4).
The percentage of 4AH batteries sold to the total number of batteries sold was maximum in the year?
A   1994   
B   1995   
C   1996   
D   1997   
ANS: D - 1997

For 1996 = ( 96   x 100 ) % = 19.35%.
465
 
For 1997 = ( 105   x 100 ) % = 21.21%.
495
 
For 1998 = ( 115   x 100 ) % = 19.01%.
605

Clearly, the percentage is maximum in 1997.

5).
In case of which battery there was a continuous decrease in sales from 1992 to 1997?
A   4AH   
B   7AH   
C   32AH   
D   35AH   
ANS: B - 7AH

From the table it is clear that the sales of 7AH batteries have been decreasing continuously from 1992 to 1997.