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Study the following line graph and answer the questions.
Exports from Three Companies Over the Years (in Rs. crore)
 

=  1  x (60 + 90 + 120 + 90 + 60 + 80 + 100) 
7 
= Rs.  600  crores  
7 
Q3: Average annual exports during the given period for Company Y is approximately what percent of the average annual exports for Company Z?
A
87.12%
B 89.64%
C
91.21%
D
93.33%
ANS:D  93.33%
Analysis of the graph: From the graph it is clear that
 The amount of exports of Company X (in crore Rs.) in the years 1993, 1994, 1995, 1996, 1997, 1998 and 1999 are 30, 60, 40, 70, 100, 50 and 120 respectively.
 The amount of exports of Company Y (in crore Rs.) in the years 1993, 1994, 1995, 1996, 1997, 1998 and 1999 are 80, 40, 60, 60, 80, 100 and 140 respectively.
 The amount of exports of Company Z (in crore Rs.) in the years 1993, 1994, 1995, 1996, 1997, 1998 and 1999 are 60, 90,, 120, 90, 60, 80 and 100 respectively.
=  1  x (80 + 40 + 60 + 60 + 80 + 100 + 140) =  560  = 80. 
7  7 
=  1  x (60 + 90 + 120 + 90 + 60 + 80 + 100) =  600  .  
7  7 
Required percentage =  80  x 100  % 93.33%.  

Q4: What was the difference between the average exports of the three Companies in 1993 and the average exports in 1998?
A
Rs. 15.33 crores
B Rs. 18.67 crores
C
Rs. 20 crores
D Rs. 22.17 crores
ANS:C  Rs. 20 crores
Average exports of the three Companies X, Y and Z in 1993
= Rs.  1  x (30 + 80 + 60)  crores = Rs.  170  crores.  
3  3 
= Rs.  1  x (50 + 100 + 80)  crores = Rs.  230  crores.  
3  3 
Difference 




= Rs. 20 crores. 
Q5:
In which year was the difference between the exports from Companies X and Y the minimum?
A 1994
B 1995
C 1996
D 1997
ANS:C  1996
The difference between the exports from the Companies X and Y during the various years are: In 1993 = Rs. (80  30) crores = Rs. 50 crores. In 1994 = Rs. (60  40) crores = Rs. 20 crores. In 1995 = Rs. (60  40) crores = Rs. 20 crores. In 1996 = Rs. (70  60) crores = Rs. 10 crores. In 1997 = Rs. (100  80) crores = Rs. 20 crores. In 1998 = Rs. (100  50) crores = Rs. 50 crores. In 1999 = Rs. (140  120) crores = Rs. 20 crores. Clearly, the difference is minimum in the year 1996.
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