# Data Interpretation Example Problems for SBI PO 2014 - Line Graphs

Friends, as you know we have been posting Data Interpretation Lessons for upcoming SBI Probationary Officers Online Exam 2014. We have already posted important tips to solve DI along with the basic DI Models Bar Charts and Pie charts. Today we shall discuss about another important model of Data Interpretation that is Line Graph. Before going into details, lets have a brief look at our Data Interpretation study plan.

Data Interpretation study plan for SBI PO Exam 2014
• Day 1 : Introduction (over)
• Day 2 - 7 : Introductory Practice problems on various types of Data Interpretation models
• Remaining Days upto the exam date : Practice problems of various difficulty levels with shortcuts.
Now lets see the line graph.

### Line Graph Example :

Study the following graph to answer the given questions.

Percent Profit earned by two companies over the given years.

% Profit = ((Income-Expenditure)/Expenditure) x 100

Company A represented with black dots and company B represented with pink dots (Check below line graph for details).

1. If the Expenditure of Company B in 2000 was Rs. 200 Crores, what was its income ?
Solution :
Let the income be Rs. X crores
So, 20 = ((x-200)/200) x 100

=> 40 = x-200

=> x = Rs. 240 Crores

2. If the Income of Company A in 2002 was Rs. 600 crores, what was its Expenditure ?
Solution :
The income of Company A in 2002 = Rs. 600 crores % profit = 60
Let the expenditure be Rs. X crores

So, 60 = ((600-x)/x) x 100

=> x = ((600-x)/60) x 100

=> 3x = 3000 - 5x

=> 8x = 3000

=> x = 3000/8 = Rs. 375 Crores

3. If the Income of Company B in 1998 was Rs. 200 crores, what was its profit in 1999 ?
Solution :
It can't be determined as Income and Expenditure of respective year is not known. So in exam you should choose the options "None of the above" or "Can't be determined" or "Can't say" based on the given options.
What if both the "None of the above" or "Can't be determined" are there in the options ?
In such cases you should pick
• None of the above - if you have the answer but your answer is not there in the given options.
• Can't be determined - if the given data is not enough to calculate the answer.

4. If the Incomes of the two companies in 1998 were equal, what was the ratio of their Expenditure ?
Solution :
Let their equal incomes be Rs. 1 crores.
Also, let expenditure of company A be Rs. E1 crore and that of company B be Rs. E2 crores.

Now, 35 = ((I-E1)/E1) x 100

=> 35 E1 = 100 I - 100 E1

=> 135 E1 = 100 I  ------------ lets remember this as Equation 1

Similarly,

30 = ((I-E2)/E2) x 100

=> 130 E2 = 100 I ------------------ lets call it Equation 2

From 1 and 2 ,

135 E1 = 130 E2

=> E1 / E2 = 130/135 = 26/27

i.e., E1:E2 = 26:27

5. What is the percent increase in per cent profit for Company B from year 2000 to 2001 ?
Solution :
Required percentage
= ((35-20) X 100) = 75

1. thank you
could you please provide us with current affairs quick reference.

1. Bhavya. VasudevanMay 14, 2014 at 8:55 PM

You will get Monthly and Special Current Affairs Quick reference guides by this month end.

2. thanks sir/mam....

3. sir plz strong our vocab.....

4. UCO bank has released d list of d selected candidates,,,,,,,,,
vishal

5. UCO bank has released d clerk list of d selected candidates
vishal

6. Pls explain the 5th question's answer clearly....
((35-20)*100) is not equal to 75 na!!! I didn't get it..help me.

1. it is wrong my frnd.
i.e (difference b/w the two values/initial or previous value)*100

7. {(35-20)/20}*100
={15/20}*100
=15*5
=75

1. The Logic is very simple here.....If they ask percentage increase...(difference of both) divided by (lower value of both)..........if they ask percentage decrease..(difference of both) by (higher value of both)

2. percentage increase = (difference / lower value) * 100
percentage decrease = (difference / higher value) * 100

8. Can anyone share proper explanation in question 2?

9. can i know in di questions what type of simple interest and compound interest questions are asked