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All questions of Data Interpretation for DSSSB TGT/PGT/PRT Exam

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Study the following line graph and answer the questions.
Exports from Three Companies Over the Years (in Rs. crore)
Q.
In how many of the given years, were the exports from Company Z more than the average annual exports over the given   years?
  • a)
    2         
  • b)
    3       
  • c)
    4       
  • d)
    5
Correct answer is option 'C'. Can you explain this answer?

Sajal Bdw answered
Average annual exports of Company Z during the given period
= 1/7 x (60 + 90 + 120 + 90 + 60 + 80 + 100)
= Rs. ( 600 /7)crores
= Rs. 85.71 crores.
From the analysis of graph the exports of Company Z are more than the average annual exports of Company Z (i.e., Rs. 85.71 crores) during the years 1994, 1995, 1996 and 1999, i.e., during 4 of the given years.

 (Q.no: 16-20). Refer to the following table and answer the given questions.
If the number of male post graduate employees in company W is 1488, what percent of the female employees in that particular company are post graduate?
  • a)
    75%
  • b)
     100%
  • c)
    74%
  • d)
    73%
  • e)
    72%
Correct answer is option 'B'. Can you explain this answer?

Preeti Khanna answered
Number of Females in Company W = 3360 *(5/14) = 1200
Number of Post graduate employees in Company W = 3360 *(80/100) = 2688
Number of female post graduate employees in Company W = 2688 – 1488 = 1200
Required Percentage = (1200 * 100)/1200 = 100%

The following line graph gives the percent profit earned by two Companies X and Y during the period 1996 - 2001.
 
Percentage profit earned by Two Companies X and Y over the Given Years
Q.
If the incomes of two Companies were equal in 1999, then what was the ratio of expenditure of Company X to that of Company Y in 1999 ?
  • a)
    6:5         
  • b)
    5:6       
  • c)
    11:6     
  • d)
    16:15
Correct answer is option 'D'. Can you explain this answer?

Shanaya Sharma answered
In 1999 , profit % of X = 50
profit% of Y = 60
Also , let their income in 1999 be i each and expenditure of X be x and that of Y be y.

For X ,
50 = (i - x)*100/x
1/2 = (i - x)/x
x/2 = i - x
i = 3x/2 (eq1)

For Y ,
60 = (i - y)*100/y
3/5 = (i - y)/y
3y/5 = i - y
i = 8y/5(eq 2)

Equating eq 1and 2 , we get
3x/2 = 8y/5
x/y = 16/15
x : y = 16:15

The following line graph gives the percent profit earned by two Companies X and Y during the period 1996 - 2001.
Percentage profit earned by Two Companies X and Y over the Given Years
Q.
The incomes of two Companies X and Y in 2000 were in the ratio of 3:4 respectively. What was the respective ratio of their   expenditures in 2000?
  • a)
    7:22       
  • b)
    14:19     
  • c)
    15:22     
  • d)
    27:35
Correct answer is option 'C'. Can you explain this answer?

Dia Mehta answered
The correct answer is C 
Let the incomes in 2000 of Companies X and Y be 3x and 4x respectively.
And let the expenditures in 2000 of Companies X and Y be E1 and E2 respectively.
Then, for Company X we have:
65 =[( 3x - E1 )/E1]×100 =>65/100 = (3x/E1) - 1 
=> E1 = 3x×( 100/165 ) .... (i)
For Company Y we have:
50 = [(4x - E2 )/E2]x 100 =>50/100= (4x/E1) - 1 => E2 = 4x×( 100/150 ) .... (ii)
From (i) and (ii), we get:
E1/E2=[3x ×(100/165)]/[4x×(100/150)]
E1/E2=15/22 (required ratio)

 (Q.no: 16-20). Refer to the following table and answer the given questions.
Which of the given companies has the second highest number of average employees per office?
  • a)
     Q
  • b)
     R
  • c)
     S
  • d)
     U
  • e)
     T
Correct answer is option 'D'. Can you explain this answer?

Yash Patel answered
Company P – 2568/16 = 160.5 ; Company Q – 2880/18 = 160
Company R – 2310/14 = 165 ; Company S – 3575/22 = 162.5
Company T – 2054/13 = 158 ; Company U – 2788/17 = 164
Company V – 3720/24 = 155 ; Company W – 3360/21 = 160

 (Q.no: 16-20). Refer to the following table and answer the given questions.
In which of the given companies is the percentage of women employees with respect to the total number of employees(both males and females) in that company the third lowest?
  • a)
     V
  • b)
     W
  • c)
     P
  • d)
    Q
  • e)
     S
Correct answer is option 'E'. Can you explain this answer?

Aisha Gupta answered
Company P : ([7/12 * (2568)] / 2568)*100 = 58.33%
Company Q : ([5/16 * (2880)] / 2880)*100 = 31.25%
Company R : ([11/21 * (2310)] / 2310)*100 = 52.38%
Company S : ([2/5 * (3575)] / 3575)*100 = 40%
Company T : ([6/13 * (2054)] / 2054)*100 = 46.15%
Company U : ([21/41 * (2788)] / 2788)*100 = 51.21%
Company V : ([7/15 * (3720)] / 3720)*100 = 46.66%
Company W : ([5/14 * (3360)] / 3360)*100 = 35.71%

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